java格式化代码（java格式化代码工具类）

下别人的原来链接..... 支持效果不好要想格式化好需要解析语法树   7个积分我这里免费下      转自 https://download.csdn.net/download/jkl012789/10803755?utm_source=bbsseo

package com.yw.util;


import java.util.EmptyStackException;
import java.util.HashMap;
import java.util.Map;
import java.util.Stack;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class JavaForm {


    public static void main(String[] args) {
        String str = "/*** @说明 ： 可任意添加方法，类，引入包路径*/public class Test {    /**    * @说明 ：输出结果    */    public static void main(String[] args) {        System.out.println("hello world");    }}";
        str = formJava(str);
        System.out.println(str);
    }
    

    /**
     * @说明 ：格式化java代码 
     * @参数 ：@param dataTmp
     * @参数 ：@return
     * @返回 ：String
     * @作者 ：WangXL
     * @时间 ：2018 11 22
     **/
    public static String formJava(String data) {
        String dataTmp = replaceStrToUUid(data,""");
        dataTmp = replaceStrToUUid(dataTmp,"'");
        dataTmp = repalceHHF(dataTmp,"
","");
        dataTmp = repalceHHF(dataTmp,"{","{
");
        dataTmp = repalceHHF(dataTmp,"}","}
");
        dataTmp = repalceHHF(dataTmp,"/*","
/*
");
        dataTmp = repalceHHF(dataTmp,"* @","
* @");
        dataTmp = repalceHHF(dataTmp,"*/","
*/
");
        dataTmp = repalceHHF(dataTmp,";",";
");
        dataTmp = repalceHHF(dataTmp,"//","
//");
        dataTmp = repalceHHFX(dataTmp,"
");
        for(Map.Entry<String, String> r : mapZY.entrySet()){
            dataTmp = dataTmp.replace(r.getKey(),r.getValue());
        }
        if(dataTmp==null)
            return data;
        return dataTmp;
    }
    
    public static Map<String,String> mapZY = new HashMap<String,String>();
    /**
     * @说明 ： 循环替换指定字符为随机uuid  并将uui存入全局map:mapZY   
     * @参数 ：@param string   字符串
     * @参数 ：@param type    指定字符
     * @作者 ：WangXL
     * @时间 ：2018 11 23
     **/
    public static String replaceStrToUUid(String string,String type){
        Matcher slashMatcher = Pattern.compile(type).matcher(string);
        boolean bool = false;
        StringBuilder sb = new StringBuilder();
        int indexHome = -1; //开始截取下标
        while(slashMatcher.find()) {
           int indexEnd = slashMatcher.start();
           String tmp = string.substring(indexHome+1,indexEnd); //获取"号前面的数据
           if(indexHome == -1 ||bool == false){
               sb.append(tmp);
               bool = true;
               indexHome = indexEnd;
           }else{
               if(bool){
                   String tem2 = "";
                   for( int i=indexEnd-1 ; i>-1 ; i-- ){
                           char c = string.charAt(i);
                           if(c == '\'){
                               tem2 += c;
                           }else{
                               break;
                           }
                       }
                   int tem2Len = tem2.length();
                       if(tem2Len>-1){
                           //结束符前有斜杠转义符 需要判断转义个数奇偶   奇数是转义了  偶数才算是结束符号   
                           if(tem2Len % 2==1){ 
                               //奇数 非结束符
                           }else{
                               //偶数才算是结束符号
                              String uuid = UUID.randomUUID().toString().replace("-", "").toLowerCase();
                              uuid = type+uuid+type;
                              mapZY.put(uuid, type+tmp+type);
                              sb.append(uuid);
                              bool = false;
                              indexHome = indexEnd;
                           }
                       }
               }
           }
        }
        sb.append(string.substring(indexHome+1,string.length()));
        return sb.toString();
     }
    
    
    
    //处理换行
    public static String repalceHHF(String data,String a,String b){
        try{
            data = data.replace(a, "$<<yunwangA>>$<<yunwangB>>");
            String  arr[] = data.split("$<<yunwangA>>");
            StringBuilder result = new StringBuilder();
            if(arr != null){
                for(int i=0;i<arr.length;i++){
                    String t = arr[i];
                    result.append(t.trim());
                    if(t.indexOf("//")!=-1 && "
".equals(a)){
                        result.append("
");
                    }
                }
            }
            String res = result.toString();
            res = res.replace("$<<yunwangB>>", b);
            res = res.replace("$<<yunwangA>>", "");
            return res;
        }catch(Exception e){
        }
        return null;
    }
    
    //处理缩进
    public static String repalceHHFX(String data,String a){
        try{
            String  arr[] = data.split(a);
            StringBuilder result = new StringBuilder();
            if(arr != null){
                String zbf = "    ";
                Stack<String> stack = new Stack<String>();
                for(int i=0;i<arr.length;i++){
                    String tem = arr[i].trim();
                    if(tem.indexOf("{")!=-1){
                        String kg = getStack(stack,false);
                        if(kg == null){
                            result.append((tem+"
"));
                            kg = "";
                        }else{
                            kg = kg + zbf;
                            result.append(kg+tem+"
");    
                        }
                        stack.push(kg);
                    }else if(tem.indexOf("}")!=-1){
                        String kg = getStack(stack,true);
                        if(kg == null){
                            result.append(tem+"
");
                        }else{
                            result.append(kg+tem+"
");
                        }
                    }else{
                        String kg = getStack(stack,false);
                        if(kg == null){
                            result.append(tem+"
");
                        }else{
                            result.append(kg+zbf+tem+"
");
                        }
                    }
                }
            }
            String res = result.toString();
            return res;
        }catch(Exception e){}
        return null;
    }
    
    /**
     * @说明 ： 获得栈数据
     * @参数 ：@param stack 
     * @参数 ：@param bool true 弹出  false 获取
     * @时间 ：2018 11 22
     **/
    public static String getStack(Stack<String> stack,boolean bool){
        String result = null;
        try{
            if(bool){
                return stack.pop();
            }
            return stack.peek();
        }catch(EmptyStackException  e){
        }
        return result;
    }
    
}