xml格式转换为Bean
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/**
*
*/
package com.hdrs.ris.law2.large.xml.utils;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.List;
/**
* 该程序可以从xml中提出生成对应的beans，方便jaxb使用
*
* 解析说明：
* 1、如果使用"/>"做为结束，元素的开始和结束必须在一行.
* 2、如果使用</元素>结束，元素的开始和结束标签不能在一行。
* 3、如果某个元素为list，这元素中添加属性list(类型)用以标记，如<users list(user)>
*
* @author liuwenbin
*/
public class CreateBeansFromXml {
private static List<String> createFileNames=new ArrayList<String>();
private static List<String> error=new ArrayList<String>();
private static String listNameString="";
/**
* 创建java beans的主方法
* @param xmlFile xml文件的路径和文件名
* @param outBeansPath 生成beans存放的路径
*/
public static void createBeans(String xmlFile,String outBeansPath) throws Exception {
File file=new File(xmlFile);
BufferedReader bufferedReader=new BufferedReader(new FileReader(file));
String line=bufferedReader.readLine();
String makeFile="";
String parent="";
List<String> parents=new ArrayList<String>();
boolean isHead=true;
List<String> listElement=new ArrayList<String>();
while(null!=line){
if(line.contains("<?xml")){
line=bufferedReader.readLine();
continue;
}
makeFile="";
line=line.trim();
if(line.startsWith("<")){
if(line.contains("/>")){
if(line.contains(" ")){
makeFile=line.substring(line.indexOf("<")+1,line.indexOf(" "));
parent=parents.get(parents.size()-1);
fileWrite(outBeansPath+firstToUp(parent), writeElement(makeFile));
//生成java文件
if(createFileNames.contains(outBeansPath+firstToUp(makeFile))){
error.add(makeFile);
}
createFileNames.add(outBeansPath+firstToUp(makeFile));
fileWrite(outBeansPath+firstToUp(makeFile), makeJavaHead(false,isHead,makeFile));
String[] contents=line.substring(line.indexOf(" ")+1,line.indexOf("/>")).split(" ");
for (String string : contents) {
if(string.contains("=")){
fileWrite(outBeansPath+firstToUp(makeFile), writeAttribute(string.split("=")[0]));
}
}
}else{
makeFile=line.substring(line.indexOf("<")+1,line.indexOf("/>"));
}
}else if(line.contains("</")){
makeFile=line.substring(line.indexOf("</")+2,line.lastIndexOf(">"));
if(line.contains("<"+makeFile+">")){
parent=parents.get(parents.size()-1);
if(!listNameString.contains("list("+makeFile)){
fileWrite(outBeansPath+firstToUp(parent), writeElementString(makeFile));
}
}else{
parents.remove(makeFile);
}
}else{
line=line.substring(line.indexOf("<")+1,line.indexOf(">"));
if(line.contains(" ")){
makeFile=line.substring(0,line.indexOf(" "));
}else{
makeFile=line;
}
if(!isHead){
parent=parents.get(parents.size()-1);
if(!listElement.contains(makeFile)){
fileWrite(outBeansPath+firstToUp(parent), writeElement(makeFile));
}
}
parents.add(makeFile);
if(createFileNames.contains(outBeansPath+firstToUp(makeFile))){
error.add(makeFile);
}
createFileNames.add(outBeansPath+firstToUp(makeFile));
if(line.contains("list(")){
fileWrite(outBeansPath+firstToUp(makeFile), makeJavaHead(true,isHead,makeFile));
}else{
fileWrite(outBeansPath+firstToUp(makeFile), makeJavaHead(false,isHead,makeFile));
}
isHead=false;
if(line.contains(" ")){
String attrs[] =line.substring(line.indexOf(" ")+1).split(" ");
for (String attr : attrs) {
if(attr.contains("=")){
attr=attr.split("=")[0];
if(attr.startsWith("list(")){
listNameString=attr+"||";
attr=attr.substring(attr.indexOf("list(")+5,attr.indexOf(")"));
listElement.add(attr);
fileWrite(outBeansPath+firstToUp(makeFile), writeElementList(attr));
}else{
fileWrite(outBeansPath+firstToUp(makeFile), writeAttribute(attr));
}
}else if (attr.startsWith("list(")) {
listNameString=attr+"||";
attr=attr.substring(attr.indexOf("list(")+5,attr.indexOf(")"));
listElement.add(attr);
fileWrite(outBeansPath+firstToUp(makeFile), writeElementList(attr));
}
}
}
}
}
line=bufferedReader.readLine();
}
bufferedReader.close();
//为生成的文件添加getter和setter方法
File fileDir=new File(outBeansPath);
File[] files=fileDir.listFiles();
BufferedReader bufferedReader2=null;
String[] contSplit=null;
for (File file2 : files) {
if(file2.getName().contains(".svn")){
continue;
}
bufferedReader2=new BufferedReader(new FileReader(file2));
line=bufferedReader2.readLine();
while(null!=line){
if(line.contains("private")){
contSplit=line.split(" ");
writeGetterAndSetterToFile(file2.getAbsolutePath(), writeGetterAndSetter(contSplit[2].substring(0,contSplit[2].length()-1), contSplit[1]));
}
line=bufferedReader2.readLine();
}
writeGetterAndSetterToFile(file2.getAbsolutePath(), "}");
}
bufferedReader2.close();
System.out.println("======================全部结束=====================");
System.out.println("一共创建"+createFileNames.size()+"个文件：");
for (String string : createFileNames) {
System.out.println(string+".java");
}
System.out.println("---------------------------------------------------");
if(error.size()!=0){
System.out.println("产生错误:");
for (String string : error) {
System.out.println(string+"重复，可能为list，其父节点应该加上\"list("+string+")\"标识，并删除重复段");
}
}
}
/**
* 写文件
* @param fileName 文件名
* @param content 内容
* @throws Exception
*/
private static void fileWrite(String fileName,String content) throws Exception{
File file=new File(fileName+".java");
if(!file.exists()){
file.createNewFile();
}
BufferedWriter bufferedWriter=new BufferedWriter(new FileWriter(file,true));
bufferedWriter.write(content);
bufferedWriter.flush();
bufferedWriter.close();
}
/**
* 将get和set方法写到文件中
* @param fileName
* @param content
* @throws Exception
*/
private static void writeGetterAndSetterToFile(String fileName,String content) throws Exception{
File file=new File(fileName);
if(!file.exists()){
file.createNewFile();
}
BufferedWriter bufferedWriter=new BufferedWriter(new FileWriter(file,true));
bufferedWriter.write(content);
bufferedWriter.flush();
bufferedWriter.close();
}
/**
* 生成java beans文件头
* @param importList 是否是list
* @param isHead 是否是头部
* @param Element 元素名称
* @return
*/
private static String makeJavaHead(boolean importList,boolean isHead,String Element){
StringBuffer buffer=new StringBuffer();
buffer.append("package com.hdrs.ris.law2.large.xml.add;\r\n\r\n");
buffer.append("import com.thoughtworks.xstream.annotations.XStreamAlias;\r\n");
if(importList){
buffer.append("import java.util.List;\r\n");
}
if(isHead){
buffer.append("@XStreamAlias(\"");
buffer.append(Element);
buffer.append("\")\r\n");
}
buffer.append("public class ");
buffer.append(firstToUp(Element));
buffer.append(" {\r\n");
return buffer.toString();
}
/**
* 写元素(字符串)
* @param Element 元素
* @return
*/
private static String writeElementString(String Element){
StringBuffer buffer=new StringBuffer();
buffer.append("\[email protected](\"");
buffer.append(Element);
buffer.append("\")\r\n");
buffer.append("\tprivate ");
buffer.append("String");
buffer.append(" ");
buffer.append(Element);
buffer.append(";\r\n\r\n");
return buffer.toString();
}
/**
* 写元素(对象)
* @param Element 元素
* @return
*/
private static String writeElement(String Element){
StringBuffer buffer=new StringBuffer();
buffer.append("\[email protected](\"");
buffer.append(Element);
buffer.append("\")\r\n");
buffer.append("\tprivate ");
buffer.append(firstToUp(Element));
buffer.append(" ");
buffer.append(Element);
buffer.append(";\r\n\r\n");
return buffer.toString();
}
/**
* 写元素(list)
* @param Element 元素
* @return
*/
private static String writeElementList(String Element){
StringBuffer buffer=new StringBuffer();
buffer.append("\[email protected](\"");
buffer.append(Element);
buffer.append("\")\r\n");
buffer.append("\tprivate List<");
buffer.append(firstToUp(Element));
buffer.append("> ");
buffer.append(Element);
buffer.append("s;\r\n\r\n");//如果是list加”S“
return buffer.toString();
}
/**
* 写属性
* @param attr 属性名称
* @return
*/
private static String writeAttribute(String attr){
StringBuffer buffer=new StringBuffer();
buffer.append("\[email protected]");
buffer.append("\r\n");
buffer.append("\tprivate ");
buffer.append("String");
buffer.append(" ");
buffer.append(attr);
buffer.append(";\r\n\r\n");
return buffer.toString();
}
public static String writeGetterAndSetter(String param,String type){
//Getter
StringBuffer buffer=new StringBuffer();
buffer.append("\r\n\tpublic ");
buffer.append(type);
buffer.append(" get");
buffer.append(firstToUp(param));
buffer.append("() {\r\n");
buffer.append("\t\treturn ");
buffer.append(param);
buffer.append(";\r\n");
buffer.append("\t}\r\n");
//Setter
buffer.append("\tpublic void ");
buffer.append("set");
buffer.append(firstToUp(param));
buffer.append("(");
buffer.append(type);
buffer.append(" ");
buffer.append(param);
buffer.append(") {\r\n");
buffer.append("\t\tthis.");
buffer.append(param);
buffer.append(" = ");
buffer.append(param);
buffer.append(";\r\n");
buffer.append("\t}\r\n");
return buffer.toString();
}
/**
* 首字母大写
* @param word 单词
* @return
*/
private static String firstToUp(String word){
return word.replaceFirst(word.substring(0, 1), word.substring(0, 1).toUpperCase());
}
}
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