这篇文章主要介绍了弹簧自定义参数解析器代码实例,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
结合复述,编写用户自定义参数解析器UserArgumentResolver
进口javax.servlet.http.Cookie;
进口javax.servlet.http.HttpServletRequest;
进口org.springframework.beans.factory.annotation.Autowired;
进口org.springframework.core.MethodParameter;
进口org.springframework.stereotype.Service;
进口org.springframework.web.bind.support.WebDataBinderFactory;
进口org.springframework.web.context.request.NativeWebRequest;
进口org.springframework.web.method.support.HandlerMethodArgumentResolver;
进口org.springframework.web.method.support.ModelAndViewContainer;
进口cn.xingaohbd.seckil.model.User;
进口cn.xingaohbd.seckil.service.UserService;
@ service
公共类UserArgumentResolver实现HandlerMethodArgumentResolver {
@ autowired
公共UserService UserService;
公共字符串getParameterCokies (HttpServletRequest请求,字符串tokenName) {
饼干饼干[]=request.getCookies ();
(饼干ck:饼干){
如果(ck.getName () .equals (tokenName)) {
返回ck.getValue ();
}
}
返回null;
}
@Override
公共布尔supportsParameter (MethodParameter MethodParameter) {
Class<& # 63;比;p_class=methodParameter.getParameterType ();
返回p_class==User.class;
}
@Override
公共对象resolveArgument (MethodParameter参数,ModelAndViewContainer mavContainer,
{NativeWebRequest NativeWebRequest, WebDataBinderFactory binderFactory)抛出异常
HttpServletRequest请求=nativeWebRequest.getNativeRequest (HttpServletRequest.class);
字符串requestParameter_token=request.getParameter(“令牌”);
字符串cokies_token=getParameterCokies(请求,“令牌”);
如果(requestParameter_token==零,,cokies_token==null) {
返回null;
}
userService返回。getUserFromRedisByToken (requestParameter_token !=null & # 63;requestParameter_token: cokies_token);
}
}
UserService
@ service
@ transactional
公共类UserServiceImpl实现UserService {
@ autowired
私人UserRedis UserRedis;
@Override
公共对象getUserFromRedisByToken(字符串标记){
返回userRedis.get(令牌);
}
}
在WebConfig中注册自定义参数解析器UserArgumentResolver
进口并不知道;
进口org.springframework.beans.factory.annotation.Autowired;
进口org.springframework.context.annotation.Configuration;
进口org.springframework.util.ResourceUtils;
进口org.springframework.web.method.support.HandlerMethodArgumentResolver;
进口org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
进口org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
@ configuration
公开课WebConfig延伸WebMvcConfigurationSupport {
@ autowired
UserArgumentResolver UserArgumentResolver;
@Override
保护无效addArgumentResolvers (ListargumentResolvers) {
argumentResolvers.add (userArgumentResolver);
}
公共空间addResourceHandlers (ResourceHandlerRegistry注册表){
registry.addResourceHandler (“/* *”) .addResourceLocations (ResourceUtils.CLASSPATH_URL_PREFIX +/静态/);
super.addResourceHandlers(注册表);
}
}
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
