对于lambda dynamodb通过api网关获取和发布请求,我得到以下错误:
“errormessage”:“在com.peri.student.app类上找不到名为handlerequest的具有适当方法签名的公共方法”
这是我的主要代码:
package com.persi.Student;
import javax.naming.Context;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.spi.LoggerFactory;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
public class App {
//static final Logger log= LogManager.getLogger(App.class);
public static Object handleRequest(Request request, Context context) throws ResourceNotFoundException {
AmazonDynamoDB client = AmazonDynamoDBClientBuilder.defaultClient();
DynamoDBMapper mapper = new DynamoDBMapper(client);
Student student = null;
switch(request.getHttpMethod()) {
case "GET":
student = mapper.load(Student.class, request.getId());
if(student == null) {
throw new ResourceNotFoundException("Resoure not found:" + request.getId());
}
return student;
case "POST":
student = request.getStudent();
mapper.save(student);
return student;
default:
break;
}
return null;
}
}
这是我的pom.xml文件:
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.persi</groupId>
<artifactId>Student</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Student</name>
<url>http://example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<aws.java.sdk.version>2.13.7</aws.java.sdk.version>
</properties>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>17.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.2.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-lambda -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-lambda</artifactId>
<version>1.11.918</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-dynamodb -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-dynamodb</artifactId>
<version>1.11.918</version>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.14.0</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.26</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.0-rc1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.21</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<type>maven-plugin</type>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
我还将运行时设置正确更新为com.peri.student.app::handlerequest请帮助我。
1条答案
按热度按时间fcipmucu1#
你有两个问题需要解决。首先,您的类应该实现以下之一:
com.amazonaws.services.lambda.runtime.requesthandler
com.amazonaws.services.lambda.runtime.requeststreamhandler
如处理程序接口中所述。在您的情况下,您的代码看起来像:
其次,也许更重要的是处理程序方法
static
. lambda运行时找不到您的方法。只需将处理程序更改为t0:注意,它返回一个
Student
不仅仅是一个物体。这将有助于lambda运行时在返回时序列化正确的对象。