abou15871390117的博客

package test; import java.beans.BeanInfo; import java.beans.IntrospectionException; import java.beans.Introspector; import java.beans.PropertyDescriptor; import org.junit.Test; impor

package cookie; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.IOException; import ja

package session; import java.io.IOException; import java.io.PrintWriter; import java.util.HashMap; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //获取cookie //创建cookie的名称product Cookie cookie = new Cookie("product",""); //设置有效

package cookie; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServlet; im

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 1.获取所有的cookie，判断是否是第一次访问 *  */ //设置中文乱码问题 response.setContentType("text/

* request获取中文乱码 * post请求： * //设置request缓冲区编码 request.setCharacterEncoding("UTF-8"); * get请求： * username = new String(username.getBytes("ISO8859-1"),"UTF-8"); */

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 在内存中生成图片，没有设置背景颜色，画填充矩形，并且和纸大小相同，矩形有颜色 * 获取笔的对象，设置颜色 * 先准备好数据，随机生成4个字符

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 在内存中生成图片，没有设置背景颜色，画填充矩形，并且和纸大小相同，矩形有颜色 * 获取笔的对象，设置颜色 * 先准备好数据，随机生成4个字符

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //先获取到文件，读入输入流中 //获取文件夹的绝对磁盘路径 String path = getServletContext().getRealPath("/im

response.setCharacterEncoding("UTF-8");

public class CustomDateConverter implements Converter{public Date convert(String source) {//实现将日期串转成日期类型(格式是yyyy-MM-dd HH:mm:ss)SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH: