簡介:
Content-Type(MediaType),便是Internet Media Type,互聯網媒體類型;也叫作MIME類型,在Http協議消息頭中,使用Content-Type來表示具體請求中的媒體類型信息.參考前端
response.Header裏常見Content-Type通常有如下四種:java
application/x-www-form-urlencoded
multipart/form-data
application/json
text/xml
詳解:
1.application/x-www-form-urlencodedajax
application/x-www-form-urlencoded是最多見的Content-Type,form表單默認提交方式對應的content-type.json
當action爲get時候,瀏覽器用x-www-form-urlencoded的編碼方式把form數據轉換成一個字串(name1=value1&name2=value2...),而後把這個字串追加到url後面,用?分割,加載這個新的url.
當action爲post,且表單中沒有type=file類型的控件時,Content-Type也將採用此編碼方式,form數據將以key:value鍵值對的方式傳給server.後端
表單提交:瀏覽器
<form action="/test" method="post"> <input type="text" name="name" value="zhangsan"> <input type="text" name="age" value="12"> <input type="text" name="hobby" value="football"> </form>
後臺:app
import java.io.Serializable;前後端分離
public class Student implements Serializable {
private String name;
private String hobby;
private int age;ide
public String getName() { return name; } public void setName(String name) { this.name = name; } public String getHobby() { return hobby; } public void setHobby(String hobby) { this.hobby = hobby; } public int getAge() { return age; } public void setAge(int age) { this.age = age; }
}
@RequestMapping(value = "/test", method = RequestMethod.POST)
public String test(Student student) {
System.out.println(student.getName());
return "/test1";
}
2.multipart/form-datapost
當post表單中有type=file控件時content-type會使用此編碼方式.
表單提交:
<form action="/test" method="post" enctype="multipart/form-data"> <input type="text" name="name" value="zhangsan"> <input type="text" name="age" value="12"> <input type="text" name="hobby" value="football"> <input type="file" name="file1" </form>
後臺:
@RequestMapping(value = "/test", method = RequestMethod.POST)
public String test(Student student,@RequestParam(value = "file1", required = false) MultipartFile file1) {
System.out.println(student.getName());
return "/test1";
}
3.application/json
隨着json規範的流行,以及先後端分離趨勢所致,該編碼方式被愈來愈多人接受.
先後端分離後,前端一般以json格式傳遞參數,所以該編碼方式較適合RestfulApi接口.
前端傳參:
$.ajax({
url: '/test',
type: 'POST',
data: {
"name": "zhangsan",
"age": 12,
"hobby": "football"
},
dataType: "json",
success: function (date) {
} })
後臺:
@RequestMapping(value = "/test", method = RequestMethod.POST)
public String test(@RequestBody Student student) {
System.out.println(student.getName());
return "/test1";
}
4.text/xml
XML-RPC(XML Remote Procedure Call)。它是一種使用 HTTP 做爲傳輸協議,XML 做爲編碼方式的遠程調用規範。
soapUI等xml-rpc請求的參數格式.
提交參數:
<arg0> <name>zhangsan</name> <age>12</age> <hobby>footbal</hobby> </arg0>
分類: java