Java读取Json文件并返回Json字符串

直接上代码

public String readJsonFile(String filePath) {
    String jsonStr = "";
    try {
        File jsonFile = new File(filePath);
        Reader reader = new InputStreamReader(new FileInputStream(jsonFile), "utf-8");
        int ch = 0;
        StringBuffer sb = new StringBuffer();
        while ((ch = reader.read()) != -1) {
            sb.append((char) ch);
        }
        reader.close();
        jsonStr = sb.toString();
        return jsonStr;
    } catch (Exception ex) {
        ex.printStackTrace();
        return null;
    }
}