pom依赖

        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
		<dependency>
		    <groupId>com.alibaba</groupId>
		    <artifactId>fastjson</artifactId>
		    <version>1.2.62</version>
		</dependency>

后端代码

	public synchronized void manualDis(String json) {
		if(json==null||"".equals(json)) 
			return;
		try {
			//解码
			json= java.net.URLDecoder.decode(json,"UTF-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} 
		//字符串转换对象
		T t = JSON.parseObject(json,T.class);
        System.out.println(t);
	}

前端对url进行encode编码

$.ajax({
        	url:'[[@{/a/b}]]',
        	dataType:'json',
        	type:'post',
        	data:{
        		json:encodeURIComponent('{list:[{id:1,roomId:1,bed:1},{id:2,roomId:2,bed:2},{id:1,roomId:1,bed:1}]}')
        	},
        	success:function(res){
        		console.log(res);
        	},
        	error:function(){
        	}
        })