怎么改spring boot http port
发布网友
发布时间：2022-04-23 19:02
共2个回答
热心网友
时间：2023-07-04 03:32
1. servlet配置
当应用只有默认的servlet（即DispatcherServlet）时，映射的url为/,存在其他的servlet时，映射的路径为servlet的注册的beanname(可通过@Component注解修改)，创建方式如下：
[java] view plain copy
@Component("myServlet")
public class MyServlet implements Servlet{
/**
*
* @see javax.servlet.Servlet#destroy()
*/
@Override
public void destroy() {
System.out.println("destroy...");
}
/**
* @return
* @see javax.servlet.Servlet#getServletConfig()
*/
@Override
public ServletConfig getServletConfig() {
return null;
}
/**
* @return
* @see javax.servlet.Servlet#getServletInfo()
*/
@Override
public String getServletInfo() {
return null;
}
/**
* @param arg0
* @throws ServletException
* @see javax.servlet.Servlet#init(javax.servlet.ServletConfig)
*/
@Override
public void init(ServletConfig arg0) throws ServletException {
System.out.println("servlet init...");
}
/**
* @param arg0
* @param arg1
* @throws ServletException
* @throws IOException
* @see javax.servlet.Servlet#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
*/
@Override
public void service(ServletRequest arg0, ServletResponse arg1) throws ServletException,
IOException {
System.out.println("service...");
}
2. filter配置
filter配置的映射是/*，创建方式如下：
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@Component("myFilter")
public class MyFilter implements Filter{
/**
*
* @see javax.servlet.Filter#destroy()
*/
@Override
public void destroy() {
System.out.println("destroy...");
}
/**
* @param arg0
* @param arg1
* @param arg2
* @throws IOException
* @throws ServletException
* @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
*/
@Override
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
throws IOException,
ServletException {
System.out.println("doFilter...");
arg2.doFilter(arg0, arg1);
}
/**
* @param arg0
* @throws ServletException
* @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
*/
@Override
public void init(FilterConfig arg0) throws ServletException {
System.out.println("filter init...");
}
}<span style="font-family: Arial, Helvetica, FreeSans, sans-serif; font-size: 13.3333330154419px; line-height: 17.3333339691162px; background-color: transparent;"> </span>
3. listener配置
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@Component("myListener")
public class MyListener implements ServletContextListener{
/**
* @param arg0
* @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
*/
@Override
public void contextDestroyed(ServletContextEvent arg0) {
System.out.println("contextDestroyed...");
}
/**
* @param arg0
* @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
*/
@Override
public void contextInitialized(ServletContextEvent arg0) {
System.out.println("listener contextInitialized...");
}
}
如果觉得控制力度不够灵活（例如你想修改filter的映射），spring boot还提供了 ServletRegistrationBean，FilterRegistrationBean，ServletListenerRegistrationBean这3个东西来进行配置
修改filter的映射
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@Configuration
public class WebConfig {
@Bean
public FilterRegistrationBean filterRegistrationBean(MyFilter myFilter){
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
filterRegistrationBean.setFilter(myFilter);
filterRegistrationBean.setEnabled(true);
filterRegistrationBean.addUrlPatterns("/bb");
return filterRegistrationBean;
}
}
4. 配置servlet 容器
可以通过两种方式配置servlet容器，一种是通过properties文件，例如：
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server.port=8081
server.address=127.0.0.1
server.sessionTimeout=30
server.contextPath=/springboot
完整的配置信息可以看这 http://github.com/spring-projects/spring-boot/tree/master/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
另一种方式是Java代码的形式：
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@Component
public class MyCustomizationBean implements EmbeddedServletContainerCustomizer {
/**
* @param container
* @see org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer#customize(org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer)
*/
@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
container.setContextPath("/sprintboot");
container.setPort(8081);
container.setSessionTimeout(30);
}
}
5. error 处理
spring boot 提供了/error映射来进行错误处理，它会返回一个json来对错误信息进行描述（包含了http状态和异常信息）,例如404的错误
当然可以定制错误页面，通过实现ErrorController接口，并将它装配起来即可，如下：
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@Controller
public class ErrorHandleController implements ErrorController {
/**
* @return
* @see org.springframework.boot.autoconfigure.web.ErrorController#getErrorPath()
*/
@Override
public String getErrorPath() {
return "/screen/error";
}
@RequestMapping
public String errorHandle(){
return getErrorPath();
}
}
还可以这样：
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@Component
private class MyCustomizer implements EmbeddedServletContainerCustomizer {
@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
container.addErrorPages(new ErrorPage(HttpStatus.BAD_REQUEST, "/screen/error"));
}
}
6.模板引擎
spring boot 会自动配置 FreeMarker,Thymeleaf,Velocity，只需要在pom中加入相应的依赖即可，例如应用Velocity
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<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-velocity</artifactId>
</dependency>
默认配置下spring boot会从src/main/resources/templates目录中去找模板
热心网友
时间：2023-07-04 03:32
配置文件指定端口即可
server.port=88
