182 lines
5.2 KiB
Markdown
182 lines
5.2 KiB
Markdown
---
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title: 毕业设计(5)
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tags:
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- java
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- ssm
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- react
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- ant design
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- typescript
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categories: 毕业设计
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date: 2022-12-15 12:40:32
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summary: Undertow的配置何使用
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---
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## 十二、Undertow使用
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因为在开发过程中使用tomact运行过程中，每一次更改后启动的过程中启动时间大概要30s-60s左右，为了加速启动过程，我搜索了适配servlet的容器，找到了undertow这个容器，并成功适配。
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### 1.underwot介绍
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Undertow 是红帽公司开发的一款**基于 NIO 的高性能 Web 嵌入式服务器**
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#### 特点：
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**轻量级**：它是一个 Web 服务器，但不像传统的 Web 服务器有容器概念，它由两个核心 Jar 包组成，加载一个 Web 应用可以小于 10MB 内存
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**Servlet3.1 支持**：它提供了对 Servlet3.1 的支持
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**WebSocket 支持**：对 Web Socket 完全支持，用以满足 Web 应用巨大数量的客户端
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**嵌套性**：它不需要容器，只需通过 API 即可快速搭建 Web 服务器
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### 2.添加依赖
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在pom.xml的依赖中添加如下节点
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```xml
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<!-- https://mvnrepository.com/artifact/com.jfinal/jfinal-undertow -->
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<dependency>
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<groupId>com.jfinal</groupId>
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<artifactId>jfinal-undertow</artifactId>
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<version>3.3</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/com.jfinal/jfinal -->
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<dependency>
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<groupId>com.jfinal</groupId>
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<artifactId>jfinal</artifactId>
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<version>5.0.7</version>
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</dependency>
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```
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### 3.配置webbuilder
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webbuilder相当于tomact的web.xml，我们只需要将web.xml文件翻译成对应的代码就行了
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关键代码
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```java
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Consumer<WebBuilder> webBuilderConsumer = e -> { };
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protected void config(){
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WebBuilder wb = new WebBuilder(this);
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wb.addServlet("mvc", "org.springframework.web.servlet.DispatcherServlet")
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.addServletMapping("mvc","/")
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.addServletInitParam("mvc","contextConfigLocation","classpath:spring/spring-mvc.xml")
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.addInitParameter("contextConfigLocation","classpath:spring/spring.xml")
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.addListener("org.springframework.web.context.ContextLoaderListener")
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.addInitParameter("log4jConfigLocation","classpath:log4j.properties")
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.addFilter("Encoding","org.springframework.web.filter.CharacterEncodingFilter")
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.addFilterInitParam("Encoding","encoding","utf-8")
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.addFilterUrlMapping("Encoding","/*");
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webBuilder.accept(wb);
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}
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```
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### 4.继承UndertowServer
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创建自定义类 **Myserver**，继承自 **UndertowServer**，在初始化方法中为一些变量赋值。
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```java
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public class MyServer extends UndertowServer {
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protected MyServer(UndertowConfig undertowConfig) {
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super(undertowConfig);
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}
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protected void init() {
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super.builder = Undertow.builder();
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super.webBuilder = webBuilderConsumer;
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super.configUndertow();
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config();
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}
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}
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```
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### 5.重写main方法
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因为undertow会读取配置文件 **undertow.txt**,所以我们先准备undertow.txt配置文件
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```properties
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undertow.devMode=true
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undertow.port=8080
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undertow.host=0.0.0.0
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undertow.contextPath=/
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undertow.gzip.enable=true
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undertow.gzip.level=5
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undertow.gzip.minLength=1024
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undertow.ioThreads=4
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```
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然后重写main方法
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```java
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public static void main(String[] args) {
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new MyServer(new UndertowConfig(UndertowConfig.class)).start();
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}
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```
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### 6.全部代码
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```java
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package org.gjs.undertow;
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import com.jfinal.server.undertow.UndertowConfig;
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import com.jfinal.server.undertow.UndertowServer;
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import com.jfinal.server.undertow.WebBuilder;
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import io.undertow.Undertow;
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import java.util.function.Consumer;
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public class MyServer extends UndertowServer {
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protected MyServer(UndertowConfig undertowConfig) {
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super(undertowConfig);
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}
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protected void init() {
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super.builder = Undertow.builder();
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super.webBuilder = webBuilderConsumer;
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super.configUndertow();
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config();
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}
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Consumer<WebBuilder> webBuilderConsumer = e -> {
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};
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protected void config(){
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WebBuilder wb = new WebBuilder(this);
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wb.addServlet("mvc", "org.springframework.web.servlet.DispatcherServlet")
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.addServletMapping("mvc","/")
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.addServletInitParam("mvc","contextConfigLocation","classpath:spring/spring-mvc.xml")
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.addInitParameter("contextConfigLocation","classpath:spring/spring.xml")
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.addListener("org.springframework.web.context.ContextLoaderListener")
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.addInitParameter("log4jConfigLocation","classpath:log4j.properties")
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.addFilter("Encoding","org.springframework.web.filter.CharacterEncodingFilter")
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.addFilterInitParam("Encoding","encoding","utf-8")
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.addFilterUrlMapping("Encoding","/*");
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webBuilder.accept(wb);
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}
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public static void main(String[] args) {
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new MyServer(new UndertowConfig(UndertowConfig.class)).start();
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}
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}
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```
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运行测试
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启动时间只需要7.2s,启动速度显著提升
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