logcat 格式化输出json

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/** * json格式化工具 * @author Young * */public class JsonFormat {/** * 默认每次缩进两个空格 */private static final String empty="  ";public static String format(String json){try {int empty=0;char[]chs=json.toCharArray();StringBuilder stringBuilder=new StringBuilder();for (int i = 0; i < chs.length;) {//若是双引号，则为字符串，下面if语句会处理该字符串if (chs[i]=='\"') {stringBuilder.append(chs[i]);i++;//查找字符串结束位置for ( ; i < chs.length;) {//如果当前字符是双引号，且前面有连续的偶数个\，说明字符串结束if ( chs[i]=='\"'&&isDoubleSerialBackslash(chs,i-1)) {stringBuilder.append(chs[i]);i++;break;} else{stringBuilder.append(chs[i]);i++;}}}else if (chs[i]==',') {stringBuilder.append(',').append('\n').append(getEmpty(empty));i++;}else if (chs[i]=='{'||chs[i]=='[') {empty++;stringBuilder.append(chs[i]).append('\n').append(getEmpty(empty));i++;}else if (chs[i]=='}'||chs[i]==']') {empty--;stringBuilder.append('\n').append(getEmpty(empty)).append(chs[i]);i++;}else {stringBuilder.append(chs[i]);i++;}}return stringBuilder.toString();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();return json;}}private static boolean isDoubleSerialBackslash(char[] chs, int i) {int count=0;for (int j = i; j >-1; j--) {if (chs[j]=='\\') {count++;}else{return count%2==0;}}return count%2==0;}/** * 缩进  * @param count * @return */private static String getEmpty(int count){StringBuilder stringBuilder=new StringBuilder();for (int i = 0; i < count; i++) {stringBuilder.append(empty) ;}return stringBuilder.toString();}}
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