Ajax passes the value to the spring background (JSON), the parameters are automatically converted to objects, and the @requestbody gets the __JS in the controller

The project used AJAX for page data list refresh, call need to use a lot of query conditions, the previous practice is to use @requestparam to get the incoming parameters, but more parameters, the number of @RequestParam will be more and more, You can use @requestbody to receive the list of parameters in Jason format and automatically convert to a custom object, but you need to introduce Jackson

<dependency>
	        <groupId>com.jayway.jsonpath</groupId>
			<artifactid>json-path</ artifactid>
			<version>0.8.1</version>
			<scope>test</scope>
		</ dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			< artifactid>jackson-core-lgpl</artifactid>
			<version>1.8.5</version>
		</ dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			< artifactid>jackson-mapper-lgpl</artifactid>
			<version>1.8.5</version>
		</ Dependency>

This is written in Ajax: The field in the red font is the same as the fields in the Java bean, so that Jackson can automatically convert

function GetPageSize () {
		$.ajax ({  
	        type: Post),  
	        async:false,  
	        url: ' getpagesize ',  
	        data: Json.stringify ({
	        	SourceID: $ ("#source"). Val (),
	        	Seriesid: $ ("#series"). Val (),
	        	modelid: $ ("#model"). val (), City
	        	: $ ("#city"). Val (),
	        	strfrom: $ ("#from"). Val (),
	        	Strto: $ ("#to"). Val ()
	        }),
	        DataType: "JSON", 
	        contentType: "Application/json;" Charset=utf-8 ", 
	        success:function (data) {
	        	...}
	        ,
	        error:function (data) {
	        	...
	        }}
	    );
	}

This is written in spring controller:

@RequestMapping (value = "/queryinfo", method = Requestmethod.post)
	@ResponseBody public
	list<record> QueryInfo (@RequestBody searchcondition condition) {
               //...
}

This allows the Ajax data to be converted to Java objects, without a single parameter to get.