{"id":5180,"date":"2021-03-19T18:11:19","date_gmt":"2021-03-19T10:11:19","guid":{"rendered":"https:\/\/www.xttblog.com\/?p=5180"},"modified":"2021-03-19T18:11:19","modified_gmt":"2021-03-19T10:11:19","slug":"sendto-%e6%8a%a5-multiple-destinations-cannot-be-specified","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=5180","title":{"rendered":"@SendTo \u62a5 Multiple destinations cannot be specified"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u6700\u8fd1\u535a\u5ba2\u56ed\u88ab\u95ed\u7ad9\u4e86\uff0c\u6211\u8fd9\u8fb9\u7684\u535a\u5ba2\u8bbf\u95ee\u91cf\u660e\u663e\u611f\u89c9\u5230\u4e86\u589e\u591a\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u4eca\u5929\u6211\u4eec\u6765\u8bf4\u4e00\u4e2a\u5173\u4e8e Spring Cloud Stream \u7684\u95ee\u9898\u3002\u76ee\u524d Spring Cloud Stream \u4f7f\u7528\u7684\u7528\u6237\u8fd8\u4e0d\u662f\u5f88\u591a\uff0c\u6240\u4ee5\u629b\u51fa\u4e00\u4e9b\u5f02\u5e38\u540e\uff0c\u5f88\u591a\u4eba\u7d20\u624b\u65e0\u7b56\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be6\u7ec6\u5f02\u5e38\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">java.lang.IllegalArgumentException: Multiple destinations cannot be specified at org.springframework.util.Assert.isTrue(Assert.java:118) at org.springframework.cloud.stream.binding.StreamListenerMethodUtils.getOutboundBindingTargetName(StreamListenerMethodUtils.java:146) at org.springframework.cloud.stream.binding.StreamListenerAnnotationBeanPostProcessor$DefaultStreamListenerSetupMethodOrchestrator.orchestrateStreamListenerSetupMethod(StreamListenerAnnotationBeanPostProcessor.java:349) at org.springframework.cloud.stream.binding.StreamListenerAnnotationBeanPostProcessor.doPostProcess(StreamListenerAnnotationBeanPostProcessor.java:195) at org.springframework.cloud.stream.binding.StreamListenerAnnotationBeanPostProcessor.lambda$postProcessAfterInitialization$0(StreamListenerAnnotationBeanPostProcessor.java:167) at java.lang.Iterable.forEach(Iterable.java:75) at org.springframework.cloud.stream.binding.StreamListenerAnnotationBeanPostProcessor.injectAndPostProcessDependencies(StreamListenerAnnotationBeanPostProcessor.java:285) at org.springframework.cloud.stream.binding.StreamListenerAnnotationBeanPostProcessor.afterSingletonsInstantiated(StreamListenerAnnotationBeanPostProcessor.java:105) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:863) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) at org.springframework.boot.web.servle<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u9519\u8bef\u4f7f\u7528 @SendTo \u5bfc\u81f4\u7684\u3002\u6bd4\u5982\u4e0b\u9762\u7684\u7528\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@StreamListener(SampleBinding.INPUT1)\n@SendTo({SampleBinding.XTTBLOG_OUTPUT, SampleBinding.XTTBLOG_OUTPUT})\npublic String handleM(String sampleMessage){\n    log.info(\"xttblog Received message=\" + sampleMessage.toString());\n    sampleMessage = sampleMessage.toUpperCase();\n    return sampleMessage;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">@SendTo \u6ce8\u89e3\u867d\u7136\u652f\u6301\u914d\u7f6e\u4e00\u4e2a\u6570\u7ec4\uff0c\u4f46\u662f\u5bf9\u67d0\u4e9b\u6d88\u606f\u7ec4\u4ef6\u652f\u6301\u4e0d\u662f\u5f88\u53cb\u597d\uff0c\u4f1a\u629b\u51fa\u8fd9\u4e2a\u5f02\u5e38\u3002\u53ef\u4ee5\u91c7\u7528\u786c\u7f16\u7801\u6216\u662f\u5176\u4ed6\u52a8\u6001\u8f6c\u53d1\u65b9\u6848\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3e\u4f8b\u4e00\u4e2a\u6b63\u786e\u7528\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@StreamListener(SampleBinding.INPUT1)\n@SendTo(SampleBinding.XTTBLOG_OUTPUT)\npublic String handleM(String sampleMessage){\n    log.info(\"xttblog Received message=\" + sampleMessage.toString());\n    sampleMessage = sampleMessage.toUpperCase();\n    return sampleMessage;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53e6\u5916\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c@StreamListener \u548c @SendTo \u7ec4\u5408\u4f7f\u7528\u65f6\uff0c\u4e0d\u80fd\u914d\u7f6e condition\u3002<\/p>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=5180\">@SendTo \u62a5 Multiple destinations cannot be specified<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u535a\u5ba2\u56ed\u88ab\u95ed\u7ad9\u4e86\uff0c\u6211\u8fd9\u8fb9\u7684\u535a\u5ba2\u8bbf\u95ee\u91cf\u660e\u663e\u611f\u89c9\u5230\u4e86\u589e\u591a\uff01 \u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u4eca\u5929\u6211\u4eec\u6765\u8bf4\u4e00\u4e2a\u5173\u4e8e Spring Cl [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[1719,1541,1522,1638,1621],"class_list":["post-5180","post","type-post","status-publish","format-standard","hentry","category-java","tag-rabbitmq","tag-rocketmq","tag-springboot","tag-springcloud","tag-stream"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5180"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5180\/revisions"}],"predecessor-version":[{"id":5181,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5180\/revisions\/5181"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}