JavaWeb-RESTful(三)_使用SpringMVC開發RESTful_下

時間 2019-11-09

標籤 javaweb restful 使用 springmvc 開發欄目 Java 简体版

原文原文鏈接

　　JavaWeb-RESTful(一)_RESTful初認識　　傳送門html

　　JavaWeb-RESTful(二)_使用SpringMVC開發RESTful_上　　傳送門java

　　JavaWeb-RESTful(三)_使用SpringMVC開發RESTful_下　　傳送門git

　　項目已上傳至github　　傳送門github

　　Learnweb

　　　　1、單元測試：添加用戶spring

　　　　2、單元測試：修改用戶json

　　　　3、單元測試：刪除用戶數組

　　　　4、SpringBoot默認處理異常路徑服務器

1、單元測試：添加用戶app

　　在MainController.java中添加addUser()添加用戶的單元測試方法

        @Test
        public void addUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.post("/user")
                    .contentType(MediaType.APPLICATION_JSON_UTF8)
                    .content("{\"username\":\"Gary\"}"))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
            
            
        }

　　給User實體對象設置三個熟悉，id、username、password

    private String username;
    private String password;
    private String id;

　　經過id和username得到的試圖都是簡單試圖，經過password得到的試圖是複雜試圖

    @JsonView(UserSimpleView.class)
    public String getId() {
        return id;
    }

    @JsonView(UserSimpleView.class)
    public String getUsername() {
        return username;
    }

    @JsonView(UserDetailView.class)
    public String getPassword() {
        return password;
    }

　　在UserController.java中經過addUser()方法得到MainController.java中的addUser()的POST請求

    @RequestMapping(value="/user",method= RequestMethod.POST)
    public User addUser(@RequestBody User user)
    {
        //傳輸json格式的時候，必定要記得加上@RequestBody註解
        //輸出 null
        System.out.println(user.getPassword());
        //輸出 Gary
        System.out.println(user.getUsername());
        
        user.setId("1");
        return user;
    }

package com.Gary.GaryRESTful;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class GaryResTfulApplication {

    public static void main(String[] args) {
        SpringApplication.run(GaryResTfulApplication.class, args);
    }

}

GaryResTfulApplication.java

package com.Gary.GaryRESTful.controller;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;



//這是SpringBoot測試類

@RunWith(SpringRunner.class)
@SpringBootTest
public class MainController {

        @Autowired
        private WebApplicationContext webApplicationContext;
            
        //SpringMV單元測試獨立測試類
        private MockMvc mockMvc;
        
        
        @Before
        public void before()
        {
            //建立獨立測試類
            mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
        }
        
        
        //@Test
        //查詢user
        public void test() throws Exception
        {
            //發起一個Get請求
            String str = mockMvc.perform(MockMvcRequestBuilders.get("/user")
                    .param("username", "Gary")
                        //json的形式發送一個請求
                        .contentType(MediaType.APPLICATION_JSON_UTF8))
                        //指望服務器返回什麼(指望返回的狀態碼爲200)
                        .andExpect(MockMvcResultMatchers.status().isOk())
                        //指望服務器返回json中的數組長度爲3
                        .andExpect(MockMvcResultMatchers.jsonPath("$.length()").value(3))
                        .andReturn().getResponse().getContentAsString();
            
            System.out.println("查詢簡單試圖"+str);
        }
        
        //@Test
        public void getInfo() throws Exception
        {
            //發起一個get請求，查看用戶詳情
            String str = mockMvc.perform(MockMvcRequestBuilders.get("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.jsonPath("$.username").value("Gary"))
                    .andReturn().getResponse().getContentAsString();
            
            System.out.println("查詢複雜試圖"+str);
                    
        }
        
        
        @Test
        public void addUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.post("/user")
                    .contentType(MediaType.APPLICATION_JSON_UTF8)
                    .content("{\"username\":\"Gary\"}"))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
            
            
        }
        
        
        
        
        
        
}

MainController.java

package com.Gary.GaryRESTful.controller;

import java.util.ArrayList;
import java.util.List;

import org.junit.Test;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.Gary.GaryRESTful.dto.User;
import com.fasterxml.jackson.annotation.JsonView;

//表示這個Controller提供R二十天API
@RestController
public class UserController {

    
    @RequestMapping(value="/user",method = RequestMethod.GET)
    /*
     * default value     默認
     * name             請求的名字
     * required            是不是必須的,true
     * value            別名
     * 
     * */
    @JsonView(User.UserSimpleView.class)
    public List<User> query(@RequestParam(name="username",required=false) String username)
    {
        System.out.println(username);
        //知足指望服務器返回json中的數組長度爲3
        List<User> list = new ArrayList<>();
        list.add(new User());
        list.add(new User());
        list.add(new User());
        return list;
        
    }
    
    @RequestMapping(value="/user/{id}",method= RequestMethod.GET)
    //將@PathVariable路徑中的片斷映射到java代碼中    
    @JsonView(User.UserDetailView.class)
    public User getInfo(@PathVariable String id)
    {
        User user = new User();
        user.setUsername("Gary");
        return user;
    }
    
    @RequestMapping(value="/user",method= RequestMethod.POST)
    public User addUser(@RequestBody User user)
    {
        //傳輸json格式的時候，必定要記得加上@RequestBody註解
        //輸出 null
        System.out.println(user.getPassword());
        //輸出 Gary
        System.out.println(user.getUsername());
        
        user.setId("1");
        return user;
    }
    
    
    
}

UserController.java

package com.Gary.GaryRESTful.dto;

import com.fasterxml.jackson.annotation.JsonView;

public class User {

    //簡單試圖 只有一個username
    public interface UserSimpleView{};
    //複雜試圖 有username 和   password 
    public interface UserDetailView extends UserSimpleView{};

    private String username;
    private String password;
    private String id;
    
    @JsonView(UserSimpleView.class)
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    @JsonView(UserSimpleView.class)
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    
    @JsonView(UserDetailView.class)
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    
}

User.java

2、單元測試：修改用戶

　　在MainController.java中添加updataUser()修改用戶的單元測試方法

        //修改用戶
        @Test
        public void updataUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.put("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8)
                    .content("{\"username\":\"Garyary\",\"id\":\"1\"}"))
            .andExpect(MockMvcResultMatchers.status().isOk())
            .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
            
        }

　　在UserController.java中接收來自updataUser的請求

    //修改用戶資料
    @RequestMapping(value="/user/{id}",method = RequestMethod.PUT)
    public User updataUser(@RequestBody User user)
    {
        System.out.println(user.getId());
        System.out.println(user.getUsername());
        System.out.println(user.getPassword());
        
        return user;
    }

package com.Gary.GaryRESTful;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class GaryResTfulApplication {

    public static void main(String[] args) {
        SpringApplication.run(GaryResTfulApplication.class, args);
    }

}

GaryResTfulApplication.java

package com.Gary.GaryRESTful.controller;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;



//這是SpringBoot測試類

@RunWith(SpringRunner.class)
@SpringBootTest
public class MainController {

        @Autowired
        private WebApplicationContext webApplicationContext;
            
        //SpringMV單元測試獨立測試類
        private MockMvc mockMvc;
        
        
        @Before
        public void before()
        {
            //建立獨立測試類
            mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
        }
        
        
        //@Test
        //查詢user
        public void test() throws Exception
        {
            //發起一個Get請求
            String str = mockMvc.perform(MockMvcRequestBuilders.get("/user")
                    .param("username", "Gary")
                        //json的形式發送一個請求
                        .contentType(MediaType.APPLICATION_JSON_UTF8))
                        //指望服務器返回什麼(指望返回的狀態碼爲200)
                        .andExpect(MockMvcResultMatchers.status().isOk())
                        //指望服務器返回json中的數組長度爲3
                        .andExpect(MockMvcResultMatchers.jsonPath("$.length()").value(3))
                        .andReturn().getResponse().getContentAsString();
            
            System.out.println("查詢簡單試圖"+str);
        }
        
        //@Test
        public void getInfo() throws Exception
        {
            //發起一個get請求，查看用戶詳情
            String str = mockMvc.perform(MockMvcRequestBuilders.get("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.jsonPath("$.username").value("Gary"))
                    .andReturn().getResponse().getContentAsString();
            
            System.out.println("查詢複雜試圖"+str);
                    
        }
        
        //添加用戶
        //@Test
        public void addUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.post("/user")
                    .contentType(MediaType.APPLICATION_JSON_UTF8)
                    .content("{\"username\":\"Gary\"}"))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
            
            
        }
        
        //修改用戶
        @Test
        public void updataUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.put("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8)
                    .content("{\"username\":\"Garyary\",\"id\":\"1\"}"))
            .andExpect(MockMvcResultMatchers.status().isOk())
            .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
            
        }
        
        
        
        
}

MainController.java

package com.Gary.GaryRESTful.controller;

import java.util.ArrayList;
import java.util.List;

import org.junit.Test;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.Gary.GaryRESTful.dto.User;
import com.fasterxml.jackson.annotation.JsonView;

//表示這個Controller提供R二十天API
@RestController
public class UserController {

    
    @RequestMapping(value="/user",method = RequestMethod.GET)
    /*
     * default value     默認
     * name             請求的名字
     * required            是不是必須的,true
     * value            別名
     * 
     * */
    @JsonView(User.UserSimpleView.class)
    public List<User> query(@RequestParam(name="username",required=false) String username)
    {
        System.out.println(username);
        //知足指望服務器返回json中的數組長度爲3
        List<User> list = new ArrayList<>();
        list.add(new User());
        list.add(new User());
        list.add(new User());
        return list;
        
    }
    
    @RequestMapping(value="/user/{id}",method= RequestMethod.GET)
    //將@PathVariable路徑中的片斷映射到java代碼中    
    @JsonView(User.UserDetailView.class)
    public User getInfo(@PathVariable String id)
    {
        User user = new User();
        user.setUsername("Gary");
        return user;
    }
    
    @RequestMapping(value="/user",method= RequestMethod.POST)
    public User addUser(@RequestBody User user)
    {
        //傳輸json格式的時候，必定要記得加上@RequestBody註解
        //輸出 null
        System.out.println(user.getPassword());
        //輸出 Gary
        System.out.println(user.getUsername());
        
        user.setId("1");
        return user;
    }
    
    //修改用戶資料
    @RequestMapping(value="/user/{id}",method = RequestMethod.PUT)
    public User updataUser(@RequestBody User user)
    {
        System.out.println(user.getId());
        System.out.println(user.getUsername());
        System.out.println(user.getPassword());
        
        return user;
    }
    
}

UserController.java

package com.Gary.GaryRESTful.dto;

import com.fasterxml.jackson.annotation.JsonView;

public class User {

    //簡單試圖 只有一個username
    public interface UserSimpleView{};
    //複雜試圖 有username 和   password 
    public interface UserDetailView extends UserSimpleView{};

    private String username;
    private String password;
    private String id;
    
    @JsonView(UserSimpleView.class)
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    @JsonView(UserSimpleView.class)
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    
    @JsonView(UserDetailView.class)
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    
}

User.java

3、單元測試：刪除用戶

　　在MainController.java中添加deleteUser()修改用戶的單元測試方法

        //刪除用戶
        @Test
        public void deleteUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.delete("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8))
                    .andExpect(MockMvcResultMatchers.status().isOk());
        }

　　在UserController.java中接收來自deleteUser的請求

    @RequestMapping(value="/user/{id}",method = RequestMethod.DELETE)
    public User deleteUser(@PathVariable String id)
    {
        System.out.println(id);
        return null;
    }

package com.Gary.GaryRESTful;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class GaryResTfulApplication {

    public static void main(String[] args) {
        SpringApplication.run(GaryResTfulApplication.class, args);
    }

}

GaryResTfulApplication.java

package com.Gary.GaryRESTful.controller;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;



//這是SpringBoot測試類

@RunWith(SpringRunner.class)
@SpringBootTest
public class MainController {

        @Autowired
        private WebApplicationContext webApplicationContext;
            
        //SpringMV單元測試獨立測試類
        private MockMvc mockMvc;
        
        
        @Before
        public void before()
        {
            //建立獨立測試類
            mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
        }
        
        
        //@Test
        //查詢user
        public void test() throws Exception
        {
            //發起一個Get請求
            String str = mockMvc.perform(MockMvcRequestBuilders.get("/user")
                    .param("username", "Gary")
                        //json的形式發送一個請求
                        .contentType(MediaType.APPLICATION_JSON_UTF8))
                        //指望服務器返回什麼(指望返回的狀態碼爲200)
                        .andExpect(MockMvcResultMatchers.status().isOk())
                        //指望服務器返回json中的數組長度爲3
                        .andExpect(MockMvcResultMatchers.jsonPath("$.length()").value(3))
                        .andReturn().getResponse().getContentAsString();
            
            System.out.println("查詢簡單試圖"+str);
        }
        
        //@Test
        public void getInfo() throws Exception
        {
            //發起一個get請求，查看用戶詳情
            String str = mockMvc.perform(MockMvcRequestBuilders.get("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.jsonPath("$.username").value("Gary"))
                    .andReturn().getResponse().getContentAsString();
            
            System.out.println("查詢複雜試圖"+str);
                    
        }
        
        //添加用戶
        //@Test
        public void addUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.post("/user")
                    .contentType(MediaType.APPLICATION_JSON_UTF8)
                    .content("{\"username\":\"Gary\"}"))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
            
            
        }
        
        //修改用戶
        //@Test
        public void updataUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.put("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8)
                    .content("{\"username\":\"Garyary\",\"id\":\"1\"}"))
            .andExpect(MockMvcResultMatchers.status().isOk())
            .andExpect(MockMvcResultMatchers.jsonPath("$.id").value("1"));
            
        }
        
        
        //刪除用戶
        @Test
        public void deleteUser() throws Exception
        {
            mockMvc.perform(MockMvcRequestBuilders.delete("/user/1")
                    .contentType(MediaType.APPLICATION_JSON_UTF8))
                    .andExpect(MockMvcResultMatchers.status().isOk());
        }
}

MainController.java

package com.Gary.GaryRESTful.controller;

import java.util.ArrayList;
import java.util.List;

import org.junit.Test;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.Gary.GaryRESTful.dto.User;
import com.fasterxml.jackson.annotation.JsonView;

//表示這個Controller提供R二十天API
@RestController
public class UserController {

    
    @RequestMapping(value="/user",method = RequestMethod.GET)
    /*
     * default value     默認
     * name             請求的名字
     * required            是不是必須的,true
     * value            別名
     * 
     * */
    @JsonView(User.UserSimpleView.class)
    public List<User> query(@RequestParam(name="username",required=false) String username)
    {
        System.out.println(username);
        //知足指望服務器返回json中的數組長度爲3
        List<User> list = new ArrayList<>();
        list.add(new User());
        list.add(new User());
        list.add(new User());
        return list;
        
    }
    
    @RequestMapping(value="/user/{id}",method= RequestMethod.GET)
    //將@PathVariable路徑中的片斷映射到java代碼中    
    @JsonView(User.UserDetailView.class)
    public User getInfo(@PathVariable String id)
    {
        User user = new User();
        user.setUsername("Gary");
        return user;
    }
    
    @RequestMapping(value="/user",method= RequestMethod.POST)
    public User addUser(@RequestBody User user)
    {
        //傳輸json格式的時候，必定要記得加上@RequestBody註解
        //輸出 null
        System.out.println(user.getPassword());
        //輸出 Gary
        System.out.println(user.getUsername());
        
        user.setId("1");
        return user;
    }
    
    //修改用戶資料
    @RequestMapping(value="/user/{id}",method = RequestMethod.PUT)
    public User updataUser(@RequestBody User user)
    {
        System.out.println(user.getId());
        System.out.println(user.getUsername());
        System.out.println(user.getPassword());
        
        return user;
    }
    
    
    //刪除
    @RequestMapping(value="/user/{id}",method = RequestMethod.DELETE)
    public User deleteUser(@PathVariable String id)
    {
        //輸出刪除的用戶    能夠查看JUnit中的狀態嗎
        System.out.println(id);
        return null;
    }
}

UserController.java

package com.Gary.GaryRESTful.dto;

import com.fasterxml.jackson.annotation.JsonView;

public class User {

    //簡單試圖 只有一個username
    public interface UserSimpleView{};
    //複雜試圖 有username 和   password 
    public interface UserDetailView extends UserSimpleView{};

    private String username;
    private String password;
    private String id;
    
    @JsonView(UserSimpleView.class)
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    @JsonView(UserSimpleView.class)
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    
    @JsonView(UserDetailView.class)
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    
}

User.java

　　在UserController.java中經過@RequestMapping("/user")映射來處理全部user請求，使代碼變得簡介一些

package com.Gary.GaryRESTful.controller;

import java.util.ArrayList;
import java.util.List;

import org.junit.Test;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.Gary.GaryRESTful.dto.User;
import com.fasterxml.jackson.annotation.JsonView;

//表示這個Controller提供R二十天API
@RestController
@RequestMapping("/user")
public class UserController {

    
    //@RequestMapping(value="/user",method = RequestMethod.GET)
    /*
     * default value     默認
     * name             請求的名字
     * required            是不是必須的,true
     * value            別名
     * 
     * */
    @GetMapping
    @JsonView(User.UserSimpleView.class)
    public List<User> query(@RequestParam(name="username",required=false) String username)
    {
        System.out.println(username);
        //知足指望服務器返回json中的數組長度爲3
        List<User> list = new ArrayList<>();
        list.add(new User());
        list.add(new User());
        list.add(new User());
        return list;
        
    }
    

    //@RequestMapping(value="/user/{id}",method= RequestMethod.GET)
    //將@PathVariable路徑中的片斷映射到java代碼中    
    @GetMapping("/{id}")
    @JsonView(User.UserDetailView.class)
    public User getInfo(@PathVariable String id)
    {
        User user = new User();
        user.setUsername("Gary");
        return user;
    }
    
    //添加用戶
    //@RequestMapping(value="/user",method= RequestMethod.POST)
    @PostMapping
    public User addUser(@RequestBody User user)
    {
        //傳輸json格式的時候，必定要記得加上@RequestBody註解
        //輸出 null
        System.out.println(user.getPassword());
        //輸出 Gary
        System.out.println(user.getUsername());
        
        user.setId("1");
        return user;
    }
    
    //修改用戶資料
    //@RequestMapping(value="/user/{id}",method = RequestMethod.PUT)
    @PutMapping("/{id}")
    public User updataUser(@RequestBody User user)
    {
        System.out.println(user.getId());
        System.out.println(user.getUsername());
        System.out.println(user.getPassword());
        
        return user;
    }
    
    
    //刪除
    //@RequestMapping(value="/user/{id}",method = RequestMethod.DELETE)
    @DeleteMapping("/{id}")
    public User deleteUser(@PathVariable String id)
    {
        //輸出刪除的用戶    能夠查看JUnit中的狀態嗎
        System.out.println(id);
        return null;
    }
}

UserController.java

4、SpringBoot默認處理異常路徑

　　在項目static->error目錄下建立一個404.html，運行項目

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>404頁面</title>
</head>
<body>
<h1>404錯誤，你的頁面找不到了！！！</h1>
</body>
</html>

404.html

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