json格式

$.ajax({
    type:"post",
    url:"/test/saveUser",
    data:{"username":"chen","nickname":"alien"},
    dataType:"json",
    success: function(data){
        console.log(data);
    }
});

json字符串格式

$.ajax({
    type:"post",
    url:"/test/saveUser",
    data:JSON.stringify({"username":"chen","nickname":"alien"}),
    contentType:"json/application"
    dataType:"json",
    success: function(data){
        console.log(data);
    }
});

标准参数模式

$.ajax({
    type:"post",
    url:"/test/saveUser",
    data:"username=chen&nickname=alien",
    dataType:"json",
    success: function(data){
        console.log(data);
    }
});