Json传输出现中文乱码问题的解决办法

/**
     * 分页条件查询
     */
    public void selectByPagesAndCondition(HttpServletRequest req,HttpServletResponse resp) throws IOException{
        //获取数据当前页码与展示条数 url?currentPage=1&pageSize=5
        int currentPage = Integer.parseInt(req.getParameter("currentPage"));
        int pageSize = Integer.parseInt(req.getParameter("pageSize"));
        //接收brand数据
        BufferedReader reader = req.getReader();
        String s = reader.readLine();
        s = new String(s.getBytes("ISO-8859-1"),"UTF-8");
        System.out.println(s);
        Brand brand = JSONObject.parseObject(s, Brand.class);
        PageBean<Brand> pageBean = brandService.selectByPagesAndCondition(currentPage, pageSize,brand);
        String StrJSON = JSON.toJSONString(pageBean);
        //返回数据的JSON格式
        resp.setContentType("text/json;charset=utf-8");
        resp.getWriter().write(StrJSON);
    }

   <build>
        <plugins>
            <!-- 配置Tomcat插件 -->
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <configuration>
                    <port>8080</port>  
                    <path>/</path>
                    <uriEncoding>utf-8</uriEncoding>  <!--指定编码格式 -->
                </configuration>
            </plugin>
        </plugins>
    </build>

@RequestMapping(produces = {"text/html;charset=utf-8"})

@requestMapping(value="/login.do",produces = {"text/html;charset=utf-8"})