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spring boot 中设置默认网页的方法

2019年07月19日  | 移动技术网IT编程  | 我要评论

废话不多说，直接上代码，相信都能看的懂

一共两布，第一步，创建interceptor拦截

package com.cy.example.config;

import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import javax.servlet.http.httpsession;

import org.slf4j.logger;
import org.slf4j.loggerfactory;
import org.springframework.web.servlet.handlerinterceptor;
import org.springframework.web.servlet.modelandview;

public class logininterceptor implements handlerinterceptor {

  private logger logger = loggerfactory.getlogger(logininterceptor.class);

  public void posthandle(httpservletrequest request,
      httpservletresponse response, object handler,
      modelandview modelandview) throws exception {
    // todo auto-generated method stub

  }

  public void aftercompletion(httpservletrequest request,
      httpservletresponse response, object handler, exception ex)
      throws exception {
    // todo auto-generated method stub

  }

  public boolean prehandle(httpservletrequest request,
      httpservletresponse response, object handler) throws exception {
    // todo auto-generated method stub
    //获取session
    httpsession session = request.getsession(true);
    logger.info("----进入登录拦截器--url："+request.getservletpath()+"-----");
    if(session.getattribute(webconfig.login_user) == null){
      logger.info("------跳转到login页面-----");
      response.sendredirect(request.getcontextpath()+"/index");
      return false;
    }else{
      session.setattribute(webconfig.login_user, session.getattribute(webconfig.login_user));
      return true;
    }
  }

}

第二步，注册创建的拦截器

package com.cy.example.config;

import org.springframework.context.annotation.configuration;
import org.springframework.web.servlet.config.annotation.defaultservlethandlerconfigurer;
import org.springframework.web.servlet.config.annotation.interceptorregistry;
import org.springframework.web.servlet.config.annotation.resourcehandlerregistry;
import org.springframework.web.servlet.config.annotation.webmvcconfigureradapter;

@configuration
public class webconfig extends webmvcconfigureradapter {

  public static string login_user = "loginuser";

  public webconfig() {
    super();
  }
  //因为新加了拦截器，这里需要重新设置资源地址
  @override
  public void addresourcehandlers(resourcehandlerregistry registry) {
    registry.addresourcehandler("/static/**").addresourcelocations(
        "classpath:/static/");
    registry.addresourcehandler("/templates/**").addresourcelocations(
        "classpath:/templates/");

    super.addresourcehandlers(registry);
  }

  @override
  public void configuredefaultservlethandling(
      defaultservlethandlerconfigurer configurer) {
    configurer.enable();
  }

  @override
  public void addinterceptors(interceptorregistry registry) {
    // 拦截规则：除了login，其他都拦截判断,excludepathpatterns是排除拦截的路径，一个是登录验证地址，一个是登录页
    registry.addinterceptor(new
logininterceptor()).addpathpatterns("/**").excludepathpatterns("/index","/system/user/validate");
    super.addinterceptors(registry);
  }

}

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