SpringMVC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SpringMVC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:
Js代码
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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){
…
}
});
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2、Controller方法:
Java代码
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@Controller
@RequestMapping ( "/catalog.do" )
public class CatalogController {
@RequestMapping (params = "fn=deleteCatalogSchemes" )
@ResponseBody
public AjaxJson deleteCatalogSchemes( @RequestParam ( "idList[]" ) List<String> idList,Boolean isBatch) {
…
}
}
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接收List<User>、User[]集合参数:
1、User实体类:
Java代码
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public class User {
private String name;
private String pwd;
//省略getter/setter
}
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2、页面js代码:
Js代码
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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){
…
}
});
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3、Controller方法:
Java代码
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@Controller
@RequestMapping( "/catalog.do" )
public class CatalogController {
@RequestMapping(params = "fn=saveUsers" )
@ResponseBody
public AjaxJson saveUsers(@RequestBody List<User> userList) {
…
}
}
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如果想要接收User[]数组,只需要把saveUsers的参数类型改为@RequestBodyUser[]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):
Js代码
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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){
…
}
});
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2、Controller方法:
Java代码
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@Controller
@RequestMapping ( "/catalog.do" )
public class CatalogController {
@RequestMapping (params = "fn=saveUsers" )
@ResponseBody
public AjaxJson saveUsers( @RequestBody List<Map<String,Object>> listMap) {
…
}
}
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接收User(bean里面包含List)集合参数:
1、User实体类:
Java代码
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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
}
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2、页面js代码:
Js代码
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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){
…
}
});
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3、Controller方法:
Java代码
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@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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总结
以上就是本文关于SpringMVC接收复杂集合对象(参数)代码示例的全部内容,希望对大家有所帮助。如有不足之处,欢迎留言指出。
原文链接:http://jxd-zxf.iteye.com/blog/2072300