java读取json文件

java读取json文件

public String JsonToObjTest1(String src) {
        String jsonStr = "";
        try {
            File jsonFile = new File(src);
            FileReader fileReader = new FileReader(jsonFile);

            Reader reader = new InputStreamReader(new FileInputStream(jsonFile),"utf-8");
            int ch = 0;
            StringBuffer sb = new StringBuffer();
            while ((ch = ()) != -1) {
                ((char) ch);
            }
            ();
            ();
            jsonStr = ();
            return jsonStr ;
        } catch (IOException e) {
            ();
            return null;
        }
    }
public static void main(String[] args) {
        // 如果json文件在项目中，可以用此路径格式
        // String src ="src/main/resources/doc/weightnotes_approval.json";
        String src ="D:/";
        String json =JsonToObjTest1();
    }