JavaWeb6 Tomcat+postman请求,响应+常用注解整理

import org.apache.catalina.core.ApplicationContext;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.startup.Tomcat;
import org.apache.catalina.startup.Tomcat.FixTriggered;
import org.apache.tomcat.util.descriptor.web.SecurityCollection;
import org.apache.tomcat.util.descriptor.web.SecurityConstraint;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
 
@RestController
public class TomcatPostmanController {
 
    @PostMapping("/postData")
    public String postData(@RequestBody String data) {
        return "Received POST data: " + data;
    }
 
    @GetMapping("/getData")
    public String getData() {
        return "Received GET request";
    }
 
    public static void main(String[] args) throws Exception {
        Tomcat tomcat = new Tomcat();
        tomcat.setPort(8080);
 
        StandardContext ctx = (StandardContext) tomcat.addWebapp("/", new File("src/main/webapp").getAbsolutePath());
        // 禁用JAR扫描
        ctx.setJarScanning(StandardContext.JAR_SCAN_NONE);
 
        // 设置应用的加载器为当前线程的ClassLoader
        ctx.setLoader(new WebappLoader(Thread.currentThread().getContextClassLoader()));
 
        // 将Spring应用上下文作为Servlet添加到Tomcat
        Tomcat.addServlet(ctx, "dispatcher", new DispatcherServlet()).setLoadOnStartup(1);
        ctx.addServletMappingDecoded("/", "dispatcher");
 
        // 禁用SSL重定向
        for (Connector con : tomcat.getService().findConnectors()) {
            if (con.getProtocolHandler() instanceof AbstractHttp11Protocol<?>) {
                ((AbstractHttp11Protocol<?>) con.getProtocolHandler()).setRedirectPort(null);
            }
        }
 
        // 添加安全约束，要求所有请求必须是HTTPS
        SecurityConstraint securityConstraint = new SecurityConstraint();
        securityConstraint.setUserConstraint("CONFIDENTIAL");
        SecurityCollection collection = new SecurityCollection();
        collection.addPattern("/*");
        securityConstraint.addCollection(collection);
        ctx.addConstraint(securityConstraint);
 
        tomcat.start();
        tomcat.getServer().await();
    }
}

这段代码演示了如何在Java中使用Spring框架的@RestController注解创建一个简单的REST API，并使用Tomcat作为服务器。它还展示了如何通过Postman发送POST请求和接收响应。在main方法中，我们配置了Tomcat服务器，并设置了应用的加载器和