spirngmvc js传递复杂json参数到controller的实例

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();

}

}

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