SpringMVC接收复杂集合参数

    Spring MVC在接收集合请求参数时，需要在Controller方法的集合参数里前添加@RequestBody，而@RequestBody默认接收的enctype (MIME编码)是application/json，因此发送POST请求时需要设置请求报文头信息，否则Spring MVC在解析集合请求参数时不会自动的转换成JSON数据再解析成相应的集合。以下列举接收List<String>、List<User>、List<Map<String,Object>>、User[]、User(bean里面包含List)几种较为复杂的集合参数示例：

• 接收List<String>集合参数：

1、页面js代码：

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：

@Controller  @RequestMapping("/catalog.do")  public class CatalogController {        @RequestMapping(params = "fn=deleteCatalogSchemes")      @ResponseBody      public AjaxJson deleteCatalogSchemes(@RequestParam("idList[]") List<String> idList,Boolean isBatch) {              …      }  }  

•  接收List<User>、User[]集合参数：

1、User实体类：

public class User {          private String name;       private String pwd;      //省略getter/setter  }  

2、页面js代码：

var userList = new Array();  userList.push({name: "李四",pwd: "123"});   userList.push({name: "张三",pwd: "332"});   $.ajax({      type: "POST",      url: "<%=path%>/catalog.do?fn=saveUsers",      data: JSON.stringify(userList),//将对象序列化成JSON字符串      dataType:"json",      contentType : 'application/json;charset=utf-8', //设置请求头信息      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 List<User> userList) {          …      }  }  

如果想要接收User[]数组，只需要把saveUsers的参数类型改为@RequestBody User[] userArray就行了。

• 接收List<Map<String,Object>>集合参数：

 1、页面js代码（不需要User对象了）：

var userList = new Array();  userList.push({name: "李四",pwd: "123"});   userList.push({name: "张三",pwd: "332"});   $.ajax({      type: "POST",      url: "<%=path%>/catalog.do?fn=saveUsers",      data: JSON.stringify(userList),//将对象序列化成JSON字符串      dataType:"json",      contentType : 'application/json;charset=utf-8', //设置请求头信息      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里面包含List)集合参数：

 1、User实体类：

public class User {      private String name;       private String pwd;      private List<User> customers;//属于用户的客户群      //省略getter/setter  }  

2、页面js代码：

var customerArray = new Array();  customerArray.push({name: "李四",pwd: "123"});   customerArray.push({name: "张三",pwd: "332"});   var user = {};  user.name = "李刚";  user.pwd = "888";  user. customers = customerArray;  $.ajax({      type: "POST",      url: "<%=path%>/catalog.do?fn=saveUsers",      data: JSON.stringify(user),//将对象序列化成JSON字符串      dataType:"json",      contentType : 'application/json;charset=utf-8', //设置请求头信息      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();          …      }  }  

转载地址: http://jxd-zxf.iteye.com/blog/2072300/