# JavaWeb
**Repository Path**: cjbgitee/JavaWeb
## Basic Information
- **Project Name**: JavaWeb
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-06-23
- **Last Updated**: 2021-11-17
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# 简单web
## Maven项目
> pom.xml
```xml
4.0.0
com.demo
javaweb
1.0-SNAPSHOT
war
javax.servlet
javax.servlet-api
4.0.1
provided
javax.servlet.jsp
jsp-api
2.1
provided
javax.servlet
jstl
1.2
runtime
org.apache.maven.plugins
maven-compiler-plugin
3.8.1
1.8
1.8
utf-8
org.apache.maven.plugins
maven-surefire-plugin
2.22.1
true
org.apache.tomcat.maven
tomcat7-maven-plugin
2.2
/${project.artifactId}
8081
utf-8
```
## web框架
> web.xml
```xml
```
## web应用
> HelloServlet.java
```java
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
@WebServlet("/hello")
public class HelloServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String currentTime = dateFormat.format(new Date());
req.setAttribute("currentTime", currentTime);
req.getRequestDispatcher("/hello.jsp").forward(req, resp);
}
}
```
> hello.jsp
```jsp
<%@ page pageEncoding="UTF-8" %>
Hello
Hello!
当前时间：${currentTime}
```
## web运行
配置Tomcat
## 提交仓库
> .gitignore
```
# Maven #
target/
# IDEA #
.idea/
*.iml
```
> git command
```shell script
# 查看远程URL
git remote -v
# 下载文件
git pull
# 查看状态
git status
# 添加文件
git add .
# 提交文件
git commit -m "备注"
# 推送文件
git push origin master
```
# 添加业务
## 添加日志
> pom.xml
```xml
org.slf4j
slf4j-log4j12
1.7.30
```
> log4j.yml
```yaml
log4j:
rootLogger: ERROR, console, file
appender:
console: org.apache.log4j.ConsoleAppender
layout: org.apache.log4j.PatternLayout
ConversionPattern: %m%n
file: org.apache.log4j.DailyRollingFileAppender
File: ${user.name}/logs/book.log
DatePattern: '_'yyyyMMdd
layoyt: org.apache.log4j.PatternLayout
ConversionPattern: %d{HH:mm:ss, SSS} %p %c (%L) -%m%n
logger:
org:
smart4j: DEBUG
```
# WEB框架
```java
// 获取请求方式
String nethod = request.getMethod();
// 获取项目名
String contextPath = request.getContextPath();
String pathInfo = request.getPathInfo();
// 获取网名
String servletPath = request.getServletPath();
// 获取访问路径: 项目名+servlet
String requestURI = request.getRequestURI();
// 获取完整路径
StringBuffer requestURL = request.getRequestURL();
```
# AOP特性
# 优化扩展