An attempt to remember the introduction of spring MVC into list<object>

First, look at an exception:

Org.springframework.http.converter.HttpMessageNotReadableException:Could not read document:unrecognized token ' Entitylist': Was expecting (' true ', ' false ' or ' null ')

The attribute values that are defined in the entity are marked as follows:

@Data  Public class COLUMNSVO {    Listnew arraylist<>();}

View Code

Front-end JS code:

$.ajax ({
    URL: ' Grid/add.columns ',
    Type: "POST",
    Data: {
        Entitylist:rows
    },
    Success:function (data) {
        Layer.msg (Data.message);
    },
    DataType: "JSON",
    ContentType: "Application/json"
});

Controller processing Code:

@RequestMapping (value = "/add", consumes = "application/json; Charset=utf-8 ")    public  easyuiresponse addcolumns (@RequestBody columnsvo columnsvo) {        System.out.println (json.tojsonstring (COLUMNSVO));         return New Easyuiresponse (easyuiresponse.success, "Configuration succeeded! ");    }

View Code

Before $.ajax data has been using {Key:value} way, this time is no exception, the result is an error ...

Search, find after solution:

$.ajax ({
    URL: ' Grid/add.columns ',
    Type: "POST",
    Json.stringify ({
        Entitylist:rows
    }),
    Success:function (data) {
        Layer.msg (Data.message);
    },
    DataType: "JSON",
    ContentType: "Application/json"
});

And above, only a little difference, the {key:value} using Json.stringify ({Key:value}) converted to a string, everything is OK!

A rather strange question, remember ...

Another: points to note in spring MVC for incoming collections:

1, look at the code:

consumes = "Application/json; Charset=utf-8 ")
Public Easyuiresponse addcolumns (@RequestBody columnsvo columnsvo) {
    System.out.println (json.tojsonstring (COLUMNSVO));
    return new Easyuiresponse (easyuiresponse.success, "Configuration succeeded! ");
}

Mark parts need attention!

2, is the above discussion section, the attention!

An attempt to remember the introduction of spring MVC into list<object>