application/x-www-form-urlencoded与application/json

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get请求（键值对）

Content-Type默认是application/x-www-form-urlencoded;charset=UTF-8
ajax请求

$.ajax({        type : "get",        url : "/login?userName=zzr&passWord=123456",        dataType : "json",        success : function(data){        },        error:function(){            gAlert("网络异常","温馨提示");        }    });

后台接收

@RequestMapping(value = "/login", method = RequestMethod.GET)public String login(@RequestParam(value="userName") String userName,@RequestParam(value="password") String password)

POST请求（键值对）

Content-Type默认是application/x-www-form-urlencoded;charset=UTF-8
ajax请求

$.ajax({        type : "post",        url : "/login",        data:{"userName":"zzr","passWord":"123456"}        dataType : "json",        success : function(data){        },        error:function(){            gAlert("网络异常","温馨提示");        }    });

后台接收

@RequestMapping(value = "/login", method = RequestMethod.POST)public String login(@RequestParam(value="userName") String userName,@RequestParam(value="password") String password)

POST请求（json字符串）

Content-Type设置为application/json;charset=UTF-8
ajax请求

var data = {"userName":"zzr","passWord":"123456"};$.ajax({        type : "get",        content-type:"application/json;charset=UTF-8"        url : "/login?userName=zzr&passWord=123456",        data : JSON.stringify(data)        dataType : "json",        success : function(data){        },        error:function(){            gAlert("网络异常","温馨提示");        }    });

后台接收

@RequestMapping(value = "/login", method = RequestMethod.POST)public String login(@RequestBody UserQO userQO)

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