發送帶有多個（LOTS）參數的帖子查詢

Question

我們有幾個包含50+個字段的表，這些表必須作爲使用RESTful服務（RESTeasy）的參數傳遞，但是我們希望避免50行@QueryParam("field") Object field。有沒有辦法發送清單，地圖或對象？

這是我們目前正在使用的代碼：

@POST 
    @Path("/custships") 
    @Produces("application/json") 
    void postCustship(@QueryParam("custShipMap") HashMap<String, Object> custShipMap); 

這是我們得到的異常：

java.lang.RuntimeException: Unable to find a constructor that takes a String param or a valueOf() or fromString() method for javax.ws.rs.QueryParam("custShipMap") on public abstract void com.waudware.pics.service.ICustshipService.postCustship(java.util.HashMap) for basetype: java.util.HashMap 
    at org.jboss.resteasy.core.StringParameterInjector.initialize(StringParameterInjector.java:207) 
    at org.jboss.resteasy.core.StringParameterInjector.<init>(StringParameterInjector.java:57) 
    at org.jboss.resteasy.core.QueryParamInjector.<init>(QueryParamInjector.java:27) 
    at org.jboss.resteasy.core.InjectorFactoryImpl.createParameterExtractor(InjectorFactoryImpl.java:87) 
    at org.jboss.resteasy.core.InjectorFactoryImpl.createParameterExtractor(InjectorFactoryImpl.java:65) 
    at org.jboss.resteasy.core.MethodInjectorImpl.<init>(MethodInjectorImpl.java:93) 
    at org.jboss.resteasy.core.InjectorFactoryImpl.createMethodInjector(InjectorFactoryImpl.java:59) 
    at org.jboss.resteasy.core.ResourceMethod.<init>(ResourceMethod.java:76) 
    at org.jboss.resteasy.core.ResourceMethodRegistry.processMethod(ResourceMethodRegistry.java:276) 
    at org.jboss.resteasy.core.ResourceMethodRegistry.addResourceFactory(ResourceMethodRegistry.java:124) 
    at org.jboss.resteasy.core.ResourceMethodRegistry.addResourceFactory(ResourceMethodRegistry.java:106) 
    at org.jboss.resteasy.plugins.spring.SpringBeanProcessor.onApplicationEvent(SpringBeanProcessor.java:457) 
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:96) 
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:334) 
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:948) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) 
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389) 
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294) 
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) 
    at org.jboss.resteasy.plugins.spring.SpringContextLoaderListener.contextInitialized(SpringContextLoaderListener.java:44) 
    at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:778) 
    at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:425) 
    at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:770) 
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:275) 
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1312) 
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:722) 
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:490) 
    at org.eclipse.jetty.maven.plugin.JettyWebAppContext.doStart(JettyWebAppContext.java:275) 
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:69) 
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:108) 
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:90) 
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:58) 
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:175) 
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:69) 
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:108) 
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:90) 
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:58) 
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:69) 
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:108) 
    at org.eclipse.jetty.server.Server.start(Server.java:346) 
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:90) 
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:58) 
    at org.eclipse.jetty.server.Server.doStart(Server.java:294) 
    at org.eclipse.jetty.maven.plugin.JettyServer.doStart(JettyServer.java:78) 
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:69) 
    at org.eclipse.jetty.maven.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:537) 
    at org.eclipse.jetty.maven.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:352) 
    at org.eclipse.jetty.maven.plugin.JettyRunWarMojo.execute(JettyRunWarMojo.java:69) 
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) 
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) 
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) 
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) 
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) 
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320) 
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) 
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) 
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) 
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:601) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) 

Answer 1

在數據傳遞正確的方法是通過PUT，並使用類似JSON或用XML表示數據作爲PUT的主體。然後使用@Consumes("application/json")，如果您映射一個對象或Map of Maps，它會將內容解組到一個對象中。

如果您正在做某些副作用，您可以用相同方式使用POST。

傳遞查詢參數的任何一種方法都不是RESTful，它最好是RPC over HTTP，並且非常不鼓勵。