获取request请求中post提交的JSON格式数据 并转化成bean

项目在交互过程中,一般会使用json格式进行数据的传输 . 需要把一些实体bean转换成json格式, 有需要把json格式转化成bean.
下面就是一个工具类,用户 json串和java bean之间相互转换

import org.codehaus.jackson.map.ObjectMapper;

import java.io.IOException;

public class JsonUtil {

    private static final ObjectMapper objectMapper = new ObjectMapper();

    public static  T convertJsonToBean(String json,Class cls){
        try {
            return objectMapper.readValue(json,cls);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public static  String convertBeanToJson(T t){
        try {
            return objectMapper.writeValueAsString(t);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

}

接下来是接收请求类,把post请求数据中的Json格式的数据串获取,并且转换成Java Bean;

     //获取post请求中 Json格式的数据
        BufferedReader streamReader = new BufferedReader( new InputStreamReader(this.request.getInputStream(), "UTF-8"));
        StringBuilder responseStrBuilder = new StringBuilder();
        String inputStr;
        while ((inputStr = streamReader.readLine()) != null) {
            responseStrBuilder.append(inputStr);
        }
        String jsonData = responseStrBuilder.toString();
        //转换成bean
        RequestDTO request = JsonUtil.convertJsonToBean(jsonData.toString(), RequestDTO.class);

当然上面 获取request 对象时,需要按照自己的项目来获取此对象.