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import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
//读取客户端的Cookie
public class ShowCookies extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
respons ...
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
//设置Cookie
//1:服务器可以向客户端写内容
//2:只能是文本内容
//3:客户端可以阻止服务器写入
//4:只能拿自己webapp写入的东西
//5:Cookie分为两种,第一种：属于窗口/子窗口（放在内存中的），第二种：属于文本(有生命周期的）
//6:一个servlet/jsp设置的cookies能够被同一个路径下面或者子路径下面的servlet/jsp读到 (路径 = URL)(路径 != 真实文件路径)
...
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class ThreeParams extends HttpServlet{
private static final long serialVersionUID = 1L;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOEx ...
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
//获取所有的参数
public class ShowParameters extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setConte ...
import java.io.IOException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class TestLifeCycleServlet extends HttpServlet ...
import java.io.IOException;import java.io.PrintWriter;
import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;
public class HelloWorldServlet extends HttpServlet {
@Override protected v ...
数据信息层：
<?xml version="1.0" encoding="UTF-8"?>
<students>
<student id="1">
<name>soso</name>
<password>123</password>
<age>10</age>
</student>
</students>
javabean：
...
配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<classes>
<class>
<className>cn.itcast.xml.parser.example1.Person</className>
<methodName>jump</methodName>
<param>
<paramType>java.lang.String</paramType> ...
package cn.itcast.xml.parser.xpath;
import java.io.File;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
public class Demo1 {
public static void main(String[] args) throws Exception {
SAXReader reader = new SAXReader();
Document document = reader ...
package cn.itcast.xml.parser.dom4j;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
public c ...
package cn.itcast.xml.parser.dom4j;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
public class Demo3 {
private stat ...
package cn.itcast.xml.parser.dom4j;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import org.dom4j.Document;
im ...
package cn.itcast.xml.parser.dom4j;
import java.io.File;
import java.util.List;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
public class Demo1 {
public static void main(String[] args) throws Exception {
//创建dom4j解析器
SAXReader reader = new SA ...
package cn.itcast.javase.reflect;
import java.lang.reflect.Method;
import org.junit.Test;
public class Demo1 {
@Test
public void test1() throws Exception{
//取得Person对应的字节码对象Class
Class clazz = Class.forName("cn.itcast.javase.reflect.Person");
Method method = clazz.getM ...
针对JavaBean 什么是JavaBean？(私有的字段/公开的空参构造方法/每个字段存取方法) PropertyDescriptor表示：描述哪个字节码对象和该类的属性 pd.getWriteMethod():相当于setter()方法 pd.getReadMethod():相当于getter()方法 BeanInfo表示：某个字节码对象的所有属性的描述 任务类都会至少有一个class属性
package cn.itcast.javase.introspector;
import java.beans.BeanInfo;
import java.beans.Intros ...