学步园

快速形成PageableResultSet2 的工具类

package sql;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ReplaceUtil {

 public static final String INPUTPATH = "C://practice//javabasic//sql//PageableResultSet2.java";

 public static final String OUTPUTPATH = "C://practice//javabasic//sql//Test.java";

 public boolean needReplace = false;

 public int count = 0;

 public String replaceString = "";

 public void process() {
  BufferedReader in = null;
  BufferedWriter out = null;
  StringBuffer sb = new StringBuffer();
  try {
   in = new BufferedReader(new FileReader(INPUTPATH));
   out = new BufferedWriter(new FileWriter(OUTPUTPATH));

   String line = "";
   while ((line = in.readLine()) != null) {
    getMethodName(line);
    if (needReplace == true && count < 4) {
     count++;
    }
    line = getNewLine(line);
    sb.append(line);
    sb.append("/r/n");
   }

   out.write(sb.toString());
  } catch (FileNotFoundException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  } finally {
   try {
    in.close();
    out.close();
   } catch (IOException e) {
    e.printStackTrace();
   }
  }
 }
 /**
  * get Method Name
  * @param line
  */
 public void getMethodName(String line) {
  if (line.trim().length() == 0 || line == null) {
   return;
  }

  if (line.indexOf("get") > 0 || line.indexOf("is") > 0
    || line.indexOf("set") > 0 || line.indexOf("update") > 0) {
   needReplace = true;
  }

  if (needReplace && count == 0) {
   int from = 0;
   if (line.indexOf("get") > 0) {
    from = line.indexOf("get");
   } else if (line.indexOf("is") > 0) {
    from = line.indexOf("is");
   } else if (line.indexOf("set") > 0) {
    from = line.indexOf("set");
   } else if (line.indexOf("update") > 0) {
    from = line.indexOf("update");
   }
   int to = line.indexOf(")");
   replaceString = line.substring(from, to + 1);
   System.out.println("[method name:]" + replaceString);
  }
 } 
 /**
  * get New Line
  * @param line
  * @return
  */
 public String getNewLine(String line) {
  if (needReplace == true && count == 3) {
   line = concatReturnString(line);
   needReplace = false;
   count = 0;
   replaceString = "";
  }
  return line;
 }
 /**
  * concat the String
  * @param line
  * @return
  */
 public String concatReturnString(String line) {
  if (replaceString.indexOf("String") > 0) {
   processReplaceString("String ");
  }
  if (replaceString.indexOf("int") > 0) {
   processReplaceString("int ");
  }
  if (replaceString.indexOf("Calendar") > 0) {
   processReplaceString("Calendar ");
  }
  if (replaceString.indexOf("Map") > 0) {
   processReplaceString("Map ");
  }
  if (replaceString.indexOf("Array") > 0) {
   processReplaceString("Array ");
  }
  if (replaceString.indexOf("InputStream") > 0) {
   processReplaceString("InputStream ");
  }
  if (replaceString.indexOf("BigDecimal") > 0) {
   processReplaceString("BigDecimal ");
  }
  if (replaceString.indexOf("Blob") > 0) {
   processReplaceString("Blob ");
  }
  if (replaceString.indexOf("boolean") > 0) {
   processReplaceString("boolean ");
  }
  if (replaceString.indexOf("byte") > 0) {
   processReplaceString("byte ");
  }
  if (replaceString.indexOf("Reader") > 0) {
   processReplaceString("Reader ");
  }
  if (replaceString.indexOf("Clob") > 0) {
   processReplaceString("Clob ");
  }
  if (replaceString.indexOf("Date") > 0) {
   processReplaceString("Date ");
  }
  if (replaceString.indexOf("double") > 0) {
   processReplaceString("double ");
  }
  if (replaceString.indexOf("float") > 0) {
   processReplaceString("float ");
  }
  if (replaceString.indexOf("long") > 0) {
   processReplaceString("long ");
  }
  if (replaceString.indexOf("Object") > 0) {
   processReplaceString("Object ");
  }
  if (replaceString.indexOf("Ref") > 0) {
   processReplaceString("Ref ");
  }
  if (replaceString.indexOf("short") > 0) {
   processReplaceString("short ");
  }
  if (replaceString.indexOf("Time") > 0) {
   processReplaceString("Time ");
  }
  if (replaceString.indexOf("Timestamp") > 0) {
   processReplaceString("Timestamp ");
  }

  String s = "";
  if (line.indexOf("return") > 0) {
   s += " return rs." + replaceString + ";";
  } else {
   s += " rs." + replaceString + ";";
  }
  return s;
 }
 /**
  * replace the int String as ""
  * @param replace
  */
 private void processReplaceString(String replace) {
  Pattern pPattern = Pattern.compile(replace + "+");
  Matcher m = pPattern.matcher(replaceString);
  replaceString = m.replaceAll("");
 }

 public static void main(String[] args) {
  new ReplaceUtil().process();
 }
}