JS传递数组到后台

方法一： 
1.使用JSON.stringify 将数组对象转化成json字符串;

var array = ["1", "2"];
$.ajax({
    type : ‘POST‘,
    url: path + ‘/check/testPost‘,
    contentType : "application/json" ,
    data : JSON.stringify(array),
    success : function(data) {  

    }
}); 

2.传输过程中参数 

3.后台处理

@RequestMapping(value = "/testPost", method = {RequestMethod.POST})
public void testPost(@RequestBody String[] array) throws IOException {
    for (String string : array) {
        System.out.println(string);
    }
    return ;
}

方法二： 
1.前端不做处理:

var array = ["1", "2"];
$.ajax({
    type : ‘POST‘,
    url: path + ‘/check/testPost‘,
    contentType: "application/x-www-form-urlencoded",
    data: {"array": array},
    success : function(data) {
    }
});  

2.传输过程中参数 

3.后台处理

@RequestMapping(value = "/testPost", method = {RequestMethod.POST})
public void testPost(HttpServletRequest req) throws IOException {
    String[] array = req.getParameterValues("array[]");
    for (String string : array) {
        System.out.println(string);
    }
    return ;
}

注:两种post请求的content-type不同。