a. <!--Spring SpringMVC相關--> spring-webmvc
b. <!--Spring事務--> spring-jdbc
c. <!--面向切面編程--> spring-aspects
d. <!--mybatis--> mybatis
e. <!--mybatis 整合 spring--> mybatis-spring
f. <!--數據庫鏈接池、驅動--> c3p0 mysql-connector-java
g. <!--jstl,servlet-api--> jstl javax.servlet-api
h. <!— MBG--> mybatis-generator-core
i. <!— junit--> junit
a. 服務器一啓動就啓動Spring 容器
b. springMVC前端控制器
c. 字符編碼過濾器,必定要放在全部過濾器以前
d. 使用Rest風格的URI,將頁面普通的post請求轉爲指定的
delete或者put請求
<!-- 將springmvc不能處理的請求交給tomcat -->前端
<!-- 能支持springmvc更高級的一些功能-->java
a. 掃描除控制器之外的其餘組件mysql
b. 配置數據源(同時將dbconfig.properties文件導入到resources目錄下)git
c. 配置和MyBatis的整合,同時在src/main/resources下建立mybaitis的配置文件mybatis-config.xml以及mapper文件夾github
d. 配置掃描器,將mybatis接口的實現加入到ioc容器中web
e. 配置一個能夠執行批量的sqlSessionspring
f. 配置事務控制sql
g. xml配置事務<!-- 切入點表達式 *表示返回值類型 ,表示com.cn.crud.service包下的,..表示即便有子包仍然能夠,表達式表達的是該包下的全部方法都能切入事務-->數據庫
h. 配置事務加強,事務如何切入編程
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!-- 配置數據庫鏈接 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/ssm_crud" userId="root"
password="123456">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- 指定javaBean生成的位置 -->
<javaModelGenerator targetPackage="com.atguigu.crud.bean"
targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!--指定sql映射文件生成的位置 -->
<sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!-- 指定dao接口生成的位置,mapper接口 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.atguigu.crud.dao" targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!-- table指定每一個表的生成策略 -->
<table tableName="tbl_emp" domainObjectName="Employee"></table>
<table tableName="tbl_dept" domainObjectName="Department"></table>
</context>
</generatorConfiguration>
public class MBGTest {
public static void main(String[] args) throws Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("mbg.xml");
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
callback, warnings);
myBatisGenerator.generate(null);
}
}
其中,<resultMap id="BaseResultMap_Dept" type="com.cn.crud.bean.Employee">
<result column="emp_id" jdbcType="INTEGER" property="empId" />
<result column="emp_name" jdbcType="VARCHAR" property="empName" />
<result column="emp_gender" jdbcType="CHAR" property="empGender" />
<result column="emp_email" jdbcType="VARCHAR" property="empEmail" />
<result column="d_id" jdbcType="INTEGER" property="dId" />
<association
property="department" javaType="com.cn.crud.bean.Department">
<id column="dept_id" property="deptId"/>
<result column="dept_name" property="deptName"/>
</association>
</resultMap>
<association> 關聯查詢,瞭解
10. * 測試dao層的工做
*推薦Spring的項目就可使用Spring的單元測試,能夠自動注入咱們須要的組件
*一、導入SpringTest模塊
在pom.xml中引入spring-test依賴
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.3.RELEASE</version>
<scope>test</scope>
</dependency>
*二、@ContextConfiguration指定Spring配置文件的位置
*三、直接autowired要使用的組件便可
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:applicationContext.xml"})
public class MapperTest {
@Autowired
DepartmentMapper departmentMapper;
@Autowired
EmployeeMapper employeeMapper;
@Autowired
SqlSession sqlSession;
/**
* 測試DepartmentMapper
*/
@Test
public void testCRUD(){
/* //一、建立SpringIOC容器
ApplicationContext ioc = new ClassPathXmlApplicationContext("applicationContext.xml");
//二、從容器中獲取mapper
DepartmentMapper bean = ioc.getBean(DepartmentMapper.class);*/
System.out.println(departmentMapper);
//一、插入幾個部門
// departmentMapper.insertSelective(new Department(null, "開發部"));
// departmentMapper.insertSelective(new Department(null, "測試部"));
//二、生成員工數據,測試員工插入
employeeMapper.insertSelective(new Employee(null, "Jerry", "M", "Jerry@atguigu.com", 1));
//三、批量插入多個員工;批量,使用能夠執行批量操做的sqlSession。
// for(){
// employeeMapper.insertSelective(new Employee(null, , "M", "Jerry@atguigu.com", 1));
// }
EmployeeMapper mapper = sqlSession.getMapper(EmployeeMapper.class);
for(int i = 0;i<1000;i++){
String uid = UUID.randomUUID().toString().substring(0,5)+i;
mapper.insertSelective(new Employee(null,uid, "M", uid+"@atguigu.com", 1));
}
System.out.println("批量完成");
}
}
11. 分頁使用插件pagehelper
須要在pom.xml中引入依賴
<!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.8</version>
</dependency>
其餘配置查看:
https://github.com/pagehelper/Mybatis-PageHelper/blob/master/wikis/zh/HowToUse.md
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(locations = { "classpath:applicationContext.xml",
"file:src/main/webapp/WEB-INF/dispatcherServlet-servlet.xml" })
public class MvcTest {
// 傳入Springmvc的ioc
@Autowired
WebApplicationContext context;
// 虛擬mvc請求,獲取處處理結果。
MockMvc mockMvc;
@Before
public void initMokcMvc() {
mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
}
@Test
public void testPage() throws Exception {
//模擬請求拿到返回值
MvcResult result = mockMvc.perform(MockMvcRequestBuilders.get("/emps").param("pn", "5"))
.andReturn();
//請求成功之後,請求域中會有pageInfo;咱們能夠取出pageInfo進行驗證
MockHttpServletRequest request = result.getRequest();
PageInfo pi = (PageInfo) request.getAttribute("pageInfo");
System.out.println("當前頁碼:"+pi.getPageNum());
System.out.println("總頁碼:"+pi.getPages());
System.out.println("總記錄數:"+pi.getTotal());
System.out.println("在頁面須要連續顯示的頁碼");
int[] nums = pi.getNavigatepageNums();
for (int i : nums) {
System.out.print(" "+i);
}
//獲取員工數據
List<Employee> list = pi.getList();
for (Employee employee : list) {
System.out.println("ID:"+employee.getEmpId()+"==>Name:"+employee.getEmpName());
}
}
}
13. @ResponseBody
@ResponseBody 能夠把返回的對象轉換爲json串,要想其正常工做須要導入jackson包:jackson-databind
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
</dependency>