Tomcat嵌入式启动

1、导入jar包

    <dependency>      <groupId>org.apache.tomcat.embed</groupId>      <artifactId>tomcat-embed-core</artifactId>      <version>8.5.13</version>    </dependency>    <!--主要获取配置属性信息-->    <dependency>      <groupId>commons-configuration</groupId>      <artifactId>commons-configuration</artifactId>      <version>1.10</version>    </dependency>    <!--避免启动出错-->    <dependency>      <groupId>tomcat</groupId>      <artifactId>jasper-runtime</artifactId>      <version>5.5.23</version>    </dependency>

2、利用Maven建立一个web项目，项目结构如图：

3、项目属性文件webserver.properties

webserver.hostname=localhostwebserver.port=8081webserver.webappDir=src/main/webappwebserver.maxPostSize=0webserver.maxThreads=10webserver.acceptCount=10

4、启动主方法

public class TestBoot {    public static void main(String[] args) {        WebServce.getWebserce().start();    }}

5、主要代码，一些配置信息

public class WebServce {    //设置主机或ip    private String hostname="localhost";    //设置端口,默认的端口，主要看配置属性    private int port=8899;    //    private String webappDir="webapp";    //设置 连接时的一些参数    private int maxPostSize=0;    private int maxThreads=200;    private int acceptCount=100;    //tomcat引用    private Tomcat tomcat;    public WebServce(){}    //获取属性信息   protected  void loadProperties()throws IOException{    PropertiesConfiguration conf=new PropertiesConfiguration();    try{        //提供文件名        conf.load("webserver.properties");    }catch (ConfigurationException ce){    }    //根据配置文件修改初始值    //第二个参数是默认值，当第一个为空时，使用默认值    this.hostname=conf.getString("webserver.hostname","localhost");    this.port=conf.getInt("webserver.port",8899);    this.webappDir=conf.getString("webserver.webappDir","webapp");    this.maxPostSize=conf.getInt("webserver.maxPostSize",0);    this.maxThreads=conf.getInt("webserver.maxThreads",200);    this.acceptCount=conf.getInt("webserver.acceptCount",100);    }    //启动    public void start(){        try{            //加载配置            this.loadProperties();            //tomcat实例            this.tomcat=new Tomcat();            this.tomcat.setPort(this.port);            this.tomcat.setHostname(this.hostname);            //tomcat存储自身信息，保存在项目目录下            this.tomcat.setBaseDir(".");            this.configServer(this.tomcat.getServer());            this.tomcat.getEngine();            this.configHost(this.tomcat.getHost());            this.configConnector(this.tomcat.getConnector());            //第一个参数上下文路径contextPath,第二个参数docBase            this.tomcat.addWebapp("", System.getProperty("user.dir")+ File.separator+this.webappDir);            //这种方式也行          //  this.tomcat.getHost().setAppBase(System.getProperty("user.dir")+ File.separator+".");          //  this.tomcat.addWebapp("",this.webappDir);            this.tomcat.start();            this.tomcat.getServer().await();        }catch(Exception e){        }    }    private void configHost(Host host) {        //user.dir  用户的当前工作目录        host.setAppBase(System.getProperty("user.dir"));    }    private void configServer(Server server) {        AprLifecycleListener listener = new AprLifecycleListener();        server.addLifecycleListener(listener);    }    //设置连接属性    private void configConnector(Connector connector) {        connector.setURIEncoding("UTF-8");        connector.setMaxPostSize(this.maxPostSize);        connector.setAttribute("maxThreads", Integer.valueOf(this.maxThreads));        connector.setAttribute("acceptCount", Integer.valueOf(this.acceptCount));        connector.setAttribute("disableUploadTimeout", Boolean.valueOf(true));        connector.setAttribute("enableLookups", Boolean.valueOf(false));    }   public static WebServce getWebserce(){       return new WebServce();   }}

6、访问页面