多表联查，多条件查询，ajax返回值乱码，前台循环展示json数据

多表联查,多条件查询

@Data
public class hangyunxingxi {

    private int hangyunid;

    private int rid;

    private int starid;

    private int endid;

    private int dateid;

    private String hangcheng;

    private float price;

    private String rname;

    private String starname;

    private String endname;

    private String date;

}

        


    
        SELECT       hangyunid,hy.rid,r.rname,hy.starid,s.starname,e.endid,e.endname,hy.dateid,sd.date,hangche  ng,price FROM hangyunxingxi hy
        LEFT JOIN route r ON hy.rid=r.rid
        LEFT JOIN star s ON hy.starid=s.starid
        LEFT JOIN `end` e ON hy.endid=e.endid
        LEFT JOIN stardate sd ON hy.dateid=sd.dateid
    

    
        SELECT hangyunid,hy.rid,r.rname,hy.starid,s.starname,e.endid,e.endname,hy.dateid,sd.date,hangcheng,price FROM hangyunxingxi hy
        LEFT JOIN route r ON hy.rid=r.rid
        LEFT JOIN star s ON hy.starid=s.starid
        LEFT JOIN `end` e ON hy.endid=e.endid
        LEFT JOIN stardate sd ON hy.dateid=sd.dateid
        
             
                rname=${rname}
            

            
                AND s.starname=${starname}
            

            
                AND e.endname=${endname}
            

            
                AND sd.date=${date}
            
        
    

前台页面展示,解决ajax返回值乱码

使用ajax请求返回前台的时候会出现乱码的情况，需要在@RequestMapping中添加produces = "application/json; charset=utf-8"

 //查询并展示所有航运信息
    @RequestMapping(value = "hangyunlist",method = RequestMethod.POST , produces = "application/json; charset=utf-8")
    @ResponseBody
    public String hangyunxingxilist(HttpServletResponse response){
        response.setContentType("text/html;charset=utf-8");
        List hangyunxingxis = zlxService.queryHangyunxingxi();

        Gson gson2=new Gson();
        String str=gson2.toJson(hangyunxingxis);

        return str;
    }

    //更具条件查询航运信息
    @RequestMapping("reach")
    public String reachhangyun(String rname,String starname,String endname,String date){  // hy 参数表示从前台传回的所有查询条件

        List hangyunxingxis = zlxService.reachHangyunxingxi(rname,starname,endname,date);

        System.out.println("查询信息" + hangyunxingxis);

        return "";
    }

<%--    航运信息表格--%>