一、概述
不同格式的JSON串传到后台来实现功能这个是我们经常要做的一件事，本篇博客就给大家介绍四种不同的JSON串传到后台后台如何用@RequestBody解析这些不同格式的JSON串的。
二、代码展示
需要引用的jar包
1.xml配置 Web.xml
1. <?xml version="1.0" encoding="UTF-8"?>
2. <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
5. >
6. <servlet>
7. <servlet-name>springMVC</servlet-name>
8. <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
9. <load-on-startup>1</load-on-startup>
10. </servlet>
11. <servlet-mapping>
12. <servlet-name>springMVC</servlet-name>
13. <url-pattern>*.spring</url-pattern>
14. </servlet-mapping>
15. <welcome-file-list>
16. <welcome-file>index.jsp</welcome-file>
17. </welcome-file-list>
18. </web-app>
springMVC-servlet.xml
<?
xml
version
=
"1.0"
encoding
=
"UTF-8"
?>
1. <beans xmlns="http://www.springframework.org/schema/beans"
2. xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3. xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
4. xsi:schemaLocation="
5. http://www.springframework.org/schema/beans
6. http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
7. http://www.springframework.org/schema/context
8. http://www.springframework.org/schema/context/spring-context-3.0.xsd
9. http://www.springframework.org/schema/mvc
10. >
11. <context:component-scan base-package="com.gaowei.JSON" />
12. <mvc:annotation-driven />
13.
14.
15. </beans>
2.Java代码 Userinfo.java
1. package com.gaowei.entity;
2.
3. public class Userinfo {
4. private String username;
5. private String password;
6. public String getUsername() {
7. return username;
8. }
9. public void setUsername(String username) {
10. this.username = username;
11. }
12. public String getPassword() {
13. return password;
14. }
15. public void setPassword(String password) {
16. this.password = password;
17. }
18. }Test.java
1. package com.gaowei.JSON;
2.
3. import java.util.ArrayList;
4. import java.util.List;
5. import java.util.Map;
6.
7. import org.springframework.stereotype.Controller;
8. import org.springframework.web.bind.annotation.RequestBody;
9. import org.springframework.web.bind.annotation.RequestMapping;
10.
11.
12. import com.gaowei.entity.Userinfo;
13.
14. @Controller
15. public class Test {
16.
17. @RequestMapping(value="getJSON1")
18. public void getJSON1(@RequestBody Userinfo userinfo){
19. "------getJSON1---start----");
20. System.out.println(userinfo.getUsername());
21. System.out.println(userinfo.getPassword());
22. "------getJSON1---end----");
23. }
24.
25. @RequestMapping(value="getJSON2")
26. public void getJSON2(@RequestBody ArrayList<String> list){
27. "------getJSON2---start----");
28. for (int i = 0; i < list.size(); i++) {
29. System.out.println(list.get(i));
30. }
31. "------getJSON2---end----");
32. }
33.
34. @RequestMapping(value="getJSON3")
35. public void getJSON3(@RequestBody List<Map> list){
36. "------getJSON3---start----");
37. for (int i = 0; i < list.size(); i++) {
38. Map map=list.get(i);
39. "username")+" "+map.get("password"));
40. }
41. "------getJSON3---end----");
42. }
43.
44. @RequestMapping(value="getJSON4")
45. public void getJSON4(@RequestBody Map map){
46. "------getJSON4---start----");
47. "username"));
48. "work");
49. for (int i = 0; i < workList.size(); i++) {
50. Map eachAddressMap=workList.get(i);
51. "address="+eachAddressMap.get("address"));
52. }
53. "school");
54. "name"));
55. "address"));
56. "------getJSON4---end----");
57. }
58. }3.界面代码 Test.jsp
1. <%@ page language="java" import="java.util.*" pageEncoding="utf-8" %>
2. >
3. <html>
4. <head>
5. <script src="jquery-1.3.2.js">
6. </script>
7. <script src="json2.js">
8. </script>
9. <script>
10. function userinfo(username, password){
11. this.username = username;
12. this.password = password;
13. }
14.
15. function sendAjax1(){
16. userinfoRef = new userinfo('中国', '中国人');
17. jsonStringRef = JSON.stringify(userinfoRef);
18. $.ajax({
19. type: "POST",
20. data: jsonStringRef,
21. t=" + new Date().getTime(),
22. contentType: "application/json"
23. });
24. }
25.
26. function sendAjax2(){
27. myArray =new Array();
28. myArray[0]="中国1";
29. myArray[1]="中国2";
30. myArray[2]="中国3";
31. myArray[3]="中国4";
32. jsonString=JSON.stringify(myArray);
33. $.ajax({
34. type: "POST",
35. data: jsonString,
36. t=" + new Date().getTime(),
37. contentType: "application/json"
38. });
39. }
40.
41.
42. function sendAjax3(){
43. myArray=new Array();
44. myArray[0]= new userinfo('中国1', '中国人1');
45. myArray[1]= new userinfo('中国2', '中国人2');
46. myArray[2]= new userinfo('中国3', '中国人3');
47. myArray[3]= new userinfo('中国4', '中国人4');
48. jsonString=JSON.stringify(myArray);
49. $.ajax({
50. type: "POST",
51. data: jsonString,
52. t=" + new Date().getTime(),
53. contentType: "application/json"
54. });
55. }
56.
57. function sendAjax4(){
58. jsonObject={
59. "username":"accp",
60. "work":[{
61. "address":"address1"
62. },{
63. "address":"address2"
64. }],
65. "school":{
66. "name":"tc",
67. "address":"pjy"
68. }
69. }
70. jsonString=JSON.stringify(jsonObject);
71. $.ajax({
72. type: "POST",
73. data: jsonString,
74. t=" + new Date().getTime(),
75. contentType: "application/json"
76. });
77. }
78. </script>
79. </head>
80. <body>
81. <input type="button" onclick="sendAjax1()" value="sendAjax1"/>
82. <br/>
83. <input type="button" onclick="sendAjax2()" value="sendAjax2">
84. <br/>
85. <input type="button" onclick="sendAjax3()" value="sendAjax3">
86. <br/>
87. <input type="button" onclick="sendAjax4()" value="sendAjax4">
88. <br/>
89. </body>
90. </html>标签：username,SpringMVC,菜鸟,myArray,JSON,new,password,public From： https://blog.51cto.com/nethub/6564745
4.效果图
三、总结。
这里要注意jar包的引用不要把spring的所有jar包都引用了会引起jar包冲突而导致报HTTP 415的错误。@RequestBody这个方法很强大可以把JSON串转化为实体类、ArryList、Map等对象。这样的方法让我们开发人员开发效率大大的提高了
