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2.Feign?源码带大括号的参数?
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publicExplorerRestApplication(){ __super();_}_/**_*CreatesarootRestletthatwillreceiveallincomingcalls._*/_@Override_publicsynchronizedRestletcreateInboundRoot(){ __Routerrouter=newRouter(getContext());__();__(router);__(router);__JsonpFilterjsonpFilter=newJsonpFilter(getContext());__(router);__returnjsonpFilter;_}
}
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protectedLoggerlogger=(getClass());
@Autowired_RepositoryServicerepositoryService;
/**_*模åå表_*/_@RequestMapping(value="list")_publicModelAndViewmodelList(){ __ModelAndViewmav=newModelAndView("workflow/model-list");__List<model>list=().list();__("list",list);__returnmav;_}
/**_*å建模å_*/_@RequestMapping(value="create")_publicvoidcreate(@RequestParam("name")Stringname,@RequestParam("key")Stringkey,@RequestParam("description")Stringdescription,_____HttpServletRequestrequest,HttpServletResponseresponse){ __try{ ___ObjectMapperobjectMapper=newObjectMapper();___ObjectNodeeditorNode=();___("id","canvas");___("resourceId","canvas");___ObjectNodestencilSetNode=();___("namespace","#");___("stencilset",stencilSetNode);___ModelmodelData=();
ObjectNodemodelObjectNode=();___(_NAME,name);___(_REVISION,1);___description=(description);___(_DESCRIPTION,description);___(());___(name);___((key));
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BpmnModelmodel=newBpmnJsonConverter().convertToBpmnModel(modelNode);___bpmnBytes=newBpmnXMLConverter().convertToXML(model);
StringprocessName=()+".";___Deploymentdeployment=().name(()).addString(processName,newString(bpmnBytes)).deploy();___("message","é¨ç½²æå,é¨ç½²ID="+());__}catch(Exceptione){ ___("æ ¹æ®æ¨¡åé¨ç½²æµç¨å¤±è´¥:modelId={ }",modelId,e);__}__return"redirect:/workflow/model/list";_}
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ByteArrayInputStreamin=newByteArrayInputStream(bpmnBytes);___(in,());___Stringfilename=().getId()+".";___("Content-Disposition","attachment;filename="+filename);___();__}catch(Exceptione){ ___("导åºmodelçxmlæ件失败:modelId={ }",modelId,e);__}_}
}</pre>
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Feign?带大括号的参数?
在使用Feign发起HTTP请求时,遇到参数值包含大括号的源码问题,导致参数设置失效。源码解决方案是源码将大括号中的参数视为表达式,通过动态变量替换。源码程序源码购买协议
在尝试免费下载拉勾教育APP的源码云印刷+源码技术文章时,遇到问题。源码原本通过POSTMAN测试成功的源码接口,在使用Feign作为HTTP客户端时却报错。源码问题出在Feign在解析header时,源码如果参数值以大括号{ }开头,源码会将其视为表达式。源码例如,源码laravel棋牌源码参数x-l-req-header设置为{ "deviceType":1}时,源码由于缺少与"deviceType":1相对应的源码动态变量,Feign未将此header包含在请求中。
深入源码分析,同源码论坛Feign在构造RequestTemplate时,会检查包含大括号的参数值,并尝试替换为动态变量。若没有找到对应的新庄建仓源码变量,该参数将被忽略。为解决这个问题,需将x-l-req-header设置为动态参数,比如使用@RequestParam注解并传入对应变量的值,如"deviceType"的值,确保在运行时能正确替换表达式。
总结:要解决Feign带大括号参数的问题,关键在于将这些参数转换为动态参数,确保在运行时能正确解析和替换。通过这种方法,可以避免因参数值的特性导致的请求头缺失,从而顺利完成HTTP请求。
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