jackson格式化后的字符串没有规律，以下直接将jackson格式化后的字符串解析后存入文本

//格式化json字符串

public static String formatJson(String jsonStr) {

if (null == jsonStr || "".equals(jsonStr)) return "";

StringBuilder sb = new StringBuilder();

char last = '\0';

char current = '\0';

int indent = 0;

for (int i = 0; i < jsonStr.length(); i++) {

last = current;

current = jsonStr.charAt(i);

switch (current) {

case '{':

case '[':

sb.append(current);

sb.append('\n');

indent++;

addIndentBlank(sb, indent);

break;

case '}':

case ']':

sb.append('\n');

indent--;

addIndentBlank(sb, indent);

sb.append(current);

break;

case ',':

sb.append(current);

if (last != '\\') {

sb.append('\n');

addIndentBlank(sb, indent);

}

break;

default:

sb.append(current);

}

}

return sb.toString();

}

/**

* 添加space

* @param sb

* @param indent

* @author xuhy

* @Date 2015-10-14 上午10:38:04

*/

public static void addIndentBlank(StringBuilder sb, int indent) {

for (int i = 0; i < indent; i++) {

sb.append('\t');

}

}

//直接用字符流写入文本了. str表示已经通过上面方法格式化后的字符串

public static void writeFile(String str,File file){

String b=formatJson(str);

try

{

// 创建文件对象

//File fileText = new File("D:\\Users\\Administrator\\Desktop\\index\\tfjbp-features-sysEN.json");

// 向文件写入对象写入信息

FileWriter fw = new FileWriter(file);

BufferedWriter bw=new BufferedWriter(fw);

// 写文件

bw.write(b);

bw.flush();//强制输出下免得 en写入数据不完整

// 关闭

bw.close();

fw.close();

}

catch (IOException e)

{

//

e.printStackTrace();

}

}

效果如下：

格式化前

{"userInfo.birthday":"Birthday","report.img":"","report.company":"","userInfo.address":"Address","newPassword":"","deptIsEnabled":"","updateUser.tel":""}

格式化后

{

"userInfo.birthday":"Birthday",

"report.img":"",

"report.company":"",

"userInfo.address":"Address",

"newPassword":"",

"deptIsEnabled":"",

"updateUser.tel":""

}