Geek_sun的博客

//Geeksun 2018.07.30package com.geeksun.oneimport java.io.InputStream;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import ja...

//Geeksun 2018.07.31package com.geeksun.reflectionUtils;import java.lang.reflect.Field;import java.lang.reflect.ParameterizedType;import java.lang.reflect.Type;public class ReflectionUtils{ ...

//Geeksun 2018.07.31package com.geeksun.one;import java.lang.reflect.InvocationTargetException;import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import jav...

 JSP中一共预先定义了9个这样的对象，分别为：request、response、session、application、out、pagecontext、config、page、exception 作用域（JSP中一共有4个作用域对象，从小到大：pageContext、request、session、application）1、request对象request 对象是 javax.se...

1.自定义标签实现对遍历功能ForEachTag.javapackage com.geeksun.tag;import java.io.IOException;import java.util.Collection;import javax.servlet.jsp.JspException;import javax.servlet.jsp.tagext.SimpleTagSup...

public class ValidateColorServlet extends HttpServlet{ private static final long serialVersionUID = 1L; private static final String CHECK_CODE_KEY = "CHECK_CODE_KEY"; //图片高度，宽度，验证码的个数 privat...