在拦截器中获取url路径里@PathVariable参数值
解决办法
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Map pathVariables = (Map) request.getAttribute(
HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
String classId = (String)pathVariables.get("classId");
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示例接口
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// 获取某个班级下面的学生列表
@RequestMapping("/classes/{classId}/students")
public String list(@PathVariable String classId){
return "学生列表";
}
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完整示例
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package com.example.demo;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.HandlerMapping;
import org.springframework.web.servlet.ModelAndView;
import java.util.Map;
public class SpringMVCInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request,
HttpServletResponse response, Object handler) throws Exception {
Map pathVariables = (Map) request.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
String chatbotId = (String)pathVariables.get("classId");
System.out.println("classId: " + classId);
if ("1234".equals(classId))
return true;
return false;
}
@Override
public void postHandle(HttpServletRequest request,
HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
// TODO Auto-generated method stub
}
@Override
public void afterCompletion(HttpServletRequest request,
HttpServletResponse response, Object handler, Exception ex)
throws Exception {
// TODO Auto-generated method stub
}
}
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package com.example.demo;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
@Configuration
public class MvcInterceptorConfig extends WebMvcConfigurationSupport{
@Override
protected void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new SpringMVCInterceptor()).addPathPatterns("/chatbot/**");
super.addInterceptors(registry);
}
}
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spring @PathVariable：请求路径url 上有变量值，通过@PathVariable获取
请求路径url 上有个变量值，可以通过@PathVariable来获取
示例：
id为变量值：
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@RequestMapping(value = "/page/{id}", method = RequestMethod.GET)
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Tool tool = new Tool();
tool.setUrls(new String[]{"finance/account/loanDownExcel/cur","finance/account/loanDownExcel/all"});
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@RequestMapping("accountlog/loanDownExcel/{type}")
public void exportAccountLogExcel(@PathVariable("type") String type)throws Exception {}
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或者是
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public void exportAccountLogExcel(@PathVariable String type)throws Exception {}
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以上为个人经验，希望能给大家一个参考，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/cnm10050/article/details/106344305