DOM4J可以处理html文件吗? 怎么处理

可以，以字符串的形式解析。。。

package com.mty95190.test

//先加入dom4j.jar包

import java.util.HashMap

import java.util.Iterator

import java.util.Map

import org.dom4j.Document

import org.dom4j.DocumentException

import org.dom4j.DocumentHelper

import org.dom4j.Element

/**

* @description 解析xml字符串

* @author 无处不在

* @Time 上午11:01:31

*/

public class aa {

public void readStringXml(String xml) {

Document doc = null

try {

// 读取并解析XML文档

// SAXReader就是一个管道，用一个流的方式，把xml文件读出来

//

// SAXReader reader = new SAXReader()//User.hbm.xml表示你要解析的xml文档

// Document document = reader.read(new File("User.hbm.xml"))

// 下面的是通过解析xml字符串的

doc = DocumentHelper.parseText(xml)// 将字符串转为XML

Element rootElt = doc.getRootElement()// 获取根节点

System.out.println("根节点：" + rootElt.getName())// 拿到根节点的名称

Iterator iter = rootElt.elementIterator("head")// 获取根节点下的子节点head

// 遍历head节点

while (iter.hasNext()) {

Element recordEle = (Element) iter.next()

String title = recordEle.elementTextTrim("title")// 拿到head节点下的子节点title值

System.out.println("title:" + title)

Iterator iters = recordEle.elementIterator("script")// 获取子节点head下的子节点script

// 遍历Header节点下的Response节点

while (iters.hasNext()) {

Element itemEle = (Element) iters.next()

String username = itemEle.elementTextTrim("username")// 拿到head下的子节点script下的字节点username的值

String password = itemEle.elementTextTrim("password")

System.out.println("username:" + username)

System.out.println("password:" + password)

}

}

Iterator iterss = rootElt.elementIterator("body")///获取根节点下的子节点body

// 遍历body节点

while (iterss.hasNext()) {

Element recordEless = (Element) iterss.next()

String result = recordEless.elementTextTrim("result")// 拿到body节点下的子节点result值

System.out.println("result:" + result)

Iterator itersElIterator = recordEless.elementIterator("form")// 获取子节点body下的子节点form

// 遍历Header节点下的Response节点

while (itersElIterator.hasNext()) {

Element itemEle = (Element) itersElIterator.next()

String banlce = itemEle.elementTextTrim("banlce")// 拿到body下的子节点form下的字节点banlce的值

String subID = itemEle.elementTextTrim("subID")

System.out.println("banlce:" + banlce)

System.out.println("subID:" + subID)

}

}

} catch (DocumentException e) {

e.printStackTrace()

} catch (Exception e) {

e.printStackTrace()

}

}

/**

* @description 将xml字符串转换成map

* @param xml

* @return Map

*/

public static Map readStringXmlOut(String xml) {

Map map = new HashMap()

Document doc = null

try {

doc = DocumentHelper.parseText(xml)// 将字符串转为XML

Element rootElt = doc.getRootElement()// 获取根节点

System.out.println("根节点：" + rootElt.getName())// 拿到根节点的名称

Iterator iter = rootElt.elementIterator("head")// 获取根节点下的子节点head

// 遍历head节点

while (iter.hasNext()) {

Element recordEle = (Element) iter.next()

String title = recordEle.elementTextTrim("title")// 拿到head节点下的子节点title值

System.out.println("title:" + title)

map.put("title", title)

Iterator iters = recordEle.elementIterator("script")// 获取子节点head下的子节点script

// 遍历Header节点下的Response节点

while (iters.hasNext()) {

Element itemEle = (Element) iters.next()

String username = itemEle.elementTextTrim("username")// 拿到head下的子节点script下的字节点username的值

String password = itemEle.elementTextTrim("password")

System.out.println("username:" + username)

System.out.println("password:" + password)

map.put("username", username)

map.put("password", password)

}

}

Iterator iterss = rootElt.elementIterator("body")///获取根节点下的子节点body

// 遍历body节点

while (iterss.hasNext()) {

Element recordEless = (Element) iterss.next()

String result = recordEless.elementTextTrim("result")// 拿到body节点下的子节点result值

System.out.println("result:" + result)

Iterator itersElIterator = recordEless.elementIterator("form")// 获取子节点body下的子节点form

// 遍历Header节点下的Response节点

while (itersElIterator.hasNext()) {

Element itemEle = (Element) itersElIterator.next()

String banlce = itemEle.elementTextTrim("banlce")// 拿到body下的子节点form下的字节点banlce的值

String subID = itemEle.elementTextTrim("subID")

System.out.println("banlce:" + banlce)

System.out.println("subID:" + subID)

map.put("result", result)

map.put("banlce", banlce)

map.put("subID", subID)

}

}

} catch (DocumentException e) {

e.printStackTrace()

} catch (Exception e) {

e.printStackTrace()

}

return map

}

public static void main(String[] args) {

// 下面是需要解析的xml字符串例子

String xmlString = "<html>" + "<head>" + "<title>dom4j解析一个例子</title>"

+ "<script>" + "<username>yangrong</username>"

+ "<password>123456</password>" + "</script>" + "</head>"

+ "<body>" + "<result>0</result>" + "<form>"

+ "<banlce>1000</banlce>" + "<subID>36242519880716</subID>"

+ "</form>" + "</body>" + "</html>"

/*

* Test2 test = new Test2()test.readStringXml(xmlString)

*/

Map map = readStringXmlOut(xmlString)

Iterator iters = map.keySet().iterator()

while (iters.hasNext()) {

String key = iters.next().toString()// 拿到键

String val = map.get(key).toString()// 拿到值

System.out.println(key + "=" + val)

}

}

}

action中

response.getWriter().write("document.write('<input type='text' id='c' value='ca'/>')")

response.getWriter().close()

return mapping.findForward("success")不能这样写只写

return null

这样页面就会有你这个文本框了！具体你要什么东西你自己拼就行了！

StringBuffer sqlBuf = new StringBuffer(100)最好规定长度

sqlBuf.append("1")这样行！

sqlBuf.append("1").append("2").append("2").append("2")这样也许

response.getWriter().write(sqlBuf.toString())

response.getWriter().close()

是不是你想要的？

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