如何在Spring data mongodb中处理DuplicateKeyException

Question

    public  String home()  {

    try
    {
    MongoData data=new MongoData();
    data.setDate(new Date());
    data.setName("frji");

    //mongoTemplate.insert(data);
    mongoTemplate.save(data);
    }
    catch (DuplicateKeyException e) {

    }
    catch (MongoException e) {

    }
    return "home";
}

  @Document(collection="integer_test")
public class MongoData {
    @Id
    private String id;
    private Date date;
    @Indexed(unique=true)
    private String name;
    @Override
    public String toString() {
        return "MongoData [date=" + date + ", id=" + id + "]";
    }
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

}

com.mongodb.mongoException$duplicateKey:{“serverused”：“192.168.1.113:27017”，“ok”：1,“n”：0,“err”：“e11000重复键错误索引:jmailer_digiengage.integer_test.$name dup键：{:\frji\”}“，”code“：11000}在com.mongodb.commodresult.getwriteException(commandresult.java:88)在在com.mongodb.dbcollectionimpl.insertimpl(dbcollectionimpl.java:210)在com.mongodb.dbcollection.insert(dbcollection.java:176)在com.mongodb.dbcollection.insert(dbcollection.java:161)在com.mongodb.dbcollection.insert(dbcollection.java:161)在com.mongodb.dbcollection.insert(dbcollection.java:107)在在org.s处执行(mongotemplate.java:479)pringframework.data.mongodb.core.mongotemplate.savedbobject（mongotemplate.java:1101)在org.springframework.data.mongodb.core.mongotemplate.doSave（mongotemplate.java:1034)在org.springframework.data.mongodb.core.mongotemplate.save（mongotemplate.java:981)在在sun.reflect.nativeMethodAccessorImpl.invoke(nativeMethodAccessorImpl.java:62)在sun.reflect.delegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)在java.lang.reflect.Method.invoke(Method.java:498)在org.springframework.web.Method.support.invocableHandlerMethod.java:221)在LetInvocableHandlerMethod.Invo在org.springframework.web.servlet.mvc.method.annotation.requestMappingGhandlerAdapter.invokeHandlerMethod(requestMappingGhandlerAdapter.java:111)在org.springframework.web.servlet.mvc.method.annotation.requestMappingAdapter.java:806)在org.springframework.web.method.annotation.requestMappingAdapter.handleInternal(requestMappingGhandlerAdapter.java在org.springframework.web.servlet.dispatcherservlet.doService（dispatcherservlet.java:893)在org.springframework.web.servlet.frameworkservlet.processRequest（frameworkservlet.java:970)在org.springframework.web.servlet.frameworkservlet.doget（frameworkservlet.java.jave.635)在在org.apache.catalina.core.applicationFilterChain.InternaldoFilter(ApplicationFilterChain.java:230)在org.apache.catalina.core.applicationFilterChain.doFilter(ApplicationFilterChain.java:165)在org.apache.catalina.core.wsfilter.doFilter(ApplicationFilterChain.java:165)在org.apache.tomcat.websocket.server.wsfilter.doFilter(wsfilter.java:52)在）在org.apache.catalina.core.standardWrapperValve.invoke(StandardWrapperValve.java:198)在org.apache.catalina.core.standardContextValve.invoke(StandardContextValve.invoke(StandardContextValve.java:96)在org.apache.catalina.authenticator.authenticator.Authenticatorbase.invoke(StandardContextValve.java:468)在（AbstractAccessLogValve.java:624)在org.apache.catalina.core.standardenginevalve.invoke(Standardenginevalve.java:87)在org.apache.catalina.connector.coyoteAdapter.Service(coyoteAdapter.java:341)在org.apache.coyote.http11.http11Processor.Service(http11Processor.java:783)在org.apache.coyote.abstractProcessorlight.process(abstractProcessorlight.process dorun（nioendpoint.java:1441)在org.apache.tomcat.util.net.socketprocessorbase.run（socketprocessorbase.java:49)在java.util.concurrent.threadpoolexecutor.runworker（threadpoolexecutor.java:1142)在java.util.concurrent.threadpoolexecutor$worker.run（threadpoolexecutor.java:617)在

Answer 1

您可以创建HandlerExceptionResolver来处理并向UI显示用户友好的消息。

如何创建HandlerExceptionResolver

更新：如果您只是想处理异常，那么在catch块中写入org.springframework.dao.duplicateKeyException。

try{
  //TODO
} catch(org.springframework.dao.DuplicateKeyException e){
 //TODO - Do what you want
}