原博客地址:http://jxd-zxf.iteye.com/blog/2072300
Spring MVC在接收集合請求參數時,需要在Controller方法的集合參數裏前添加@RequestBody,而@RequestBody默認接收的enctype (MIME編碼)是application/json,因此發送POST請求時需要設置請求報文頭信息,否則Spring MVC在解析集合請求參數時不會自動的轉換成JSON數據再解析成相應的集合。以下列舉接收List<String>、List<User>、List<Map<String,Object>>、User[]、User(bean裏面包含List)幾種較爲複雜的集合參數示例:
- 接收List<String>集合參數:
1、頁面js代碼:
- var idList = new Array();
- idList.push(“1”);
- idList.push(“2”);
- idList.push(“3”);
- var isBatch = false;
- $.ajax({
- type: "POST",
- url: "<%=path%>/catalog.do?fn=deleteCatalogSchemes",
- dataType: 'json',
- data: {"idList":idList,"isBatch":isBatch},
- success: function(data){
- …
- },
- error: function(res){
- …
- }
- });
2、Controller方法:
- 接收List<User>、User[]集合參數:
1、User實體類:
2、頁面js代碼:
- var userList = new Array();
- userList.push({name: "李四",pwd: "123"});
- userList.push({name: "張三",pwd: "332"});
- $.ajax({
- type: "POST",
- url: "<%=path%>/catalog.do?fn=saveUsers",
- data: JSON.stringify(userList),//將對象序列化成JSON字符串
- dataType:"json",
- contentType : 'application/json;charset=utf-8', //設置請求頭信息
- success: function(data){
- …
- },
- error: function(res){
- …
- }
- });
3、Controller方法:
如果想要接收User[]數組,只需要把saveUsers的參數類型改爲@RequestBody User[] userArray就行了。
- 接收List<Map<String,Object>>集合參數:
1、頁面js代碼(不需要User對象了):
- var userList = new Array();
- userList.push({name: "李四",pwd: "123"});
- userList.push({name: "張三",pwd: "332"});
- $.ajax({
- type: "POST",
- url: "<%=path%>/catalog.do?fn=saveUsers",
- data: JSON.stringify(userList),//將對象序列化成JSON字符串
- dataType:"json",
- contentType : 'application/json;charset=utf-8', //設置請求頭信息
- success: function(data){
- …
- },
- error: function(res){
- …
- }
- });
2、Controller方法:
- @Controller
- @RequestMapping("/catalog.do")
- public class CatalogController {
- @RequestMapping(params = "fn=saveUsers")
- @ResponseBody
- public AjaxJson saveUsers(@RequestBody List<Map<String,Object>> listMap) {
- …
- }
- }
- 接收User(bean裏面包含List)集合參數:
1、User實體類:
- public class User {
- private String name;
- private String pwd;
- private List<User> customers;//屬於用戶的客戶羣
- //省略getter/setter
- }
2、頁面js代碼:
- var customerArray = new Array();
- customerArray.push({name: "李四",pwd: "123"});
- customerArray.push({name: "張三",pwd: "332"});
- var user = {};
- user.name = "李剛";
- user.pwd = "888";
- user. customers = customerArray;
- $.ajax({
- type: "POST",
- url: "<%=path%>/catalog.do?fn=saveUsers",
- data: JSON.stringify(user),//將對象序列化成JSON字符串
- dataType:"json",
- contentType : 'application/json;charset=utf-8', //設置請求頭信息
- success: function(data){
- …
- },
- error: function(res){
- …
- }
- });
3、Controller方法:
- @Controller
- @RequestMapping("/catalog.do")
- public class CatalogController {
- @RequestMapping(params = "fn=saveUsers")
- @ResponseBody
- public AjaxJson saveUsers(@RequestBody User user) {
- List<User> customers = user.getCustomers();
- …
- }
- }