我对 Dropwizard 以及整个 JAVA 都很陌生。我尝试创建一个基本的 Dropwizard 项目(通过 Hibernate 与 MySQL 数据库连接)。我正在使用 Eclipse IDE 来实现同样的目的。我已按照 T 执行所有步骤，但在控制台中输入此命令后 -> java -jar target/hotel2-0.0.1-SNAPSHOT.jar server config.yml。我收到以下错误:-
config.yml has an error:
* Failed to parse configuration at: logging; Can not instantiate value of type [simple type, class io.dropwizard.logging.LoggingFactory] from String value (''); no single-String constructor/factory method at [Source: N/A; line: -1, column: -1] (through reference chain: com.drivedge.hotel2.HotelMgntConfiguration["logging"])
下面是我的 pom.xml 和 config.yml 文件的副本:
config.yml -
## Configuration file for Hotel2 application.
---
# User login.
logging:
login: javaeeeee
# User password.
password: crimson
#Server configuration.
server:
applicationConnectors:
- type: http
port: 9090
- type: https
port: 9090
keyStorePath: hotel2.keystore
keyStorePassword: crimson
# Database settings.
database:
# the name of the JDBC driver, mysql in our case
driverClass: com.mysql.jdbc.Driver
# the username
user: root
# the password
password: drivedge12
# the JDBC URL; the database is called Hotel2
url: jdbc:mysql://localhost:3306/hotelmanagement
pom.xml-
<?xml version="1.0" encoding="UTF-8"?>
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<prerequisites>
<maven>3.0.0</maven>
</prerequisites>
<groupId>com.drivedge</groupId>
<artifactId>hotel2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>HotelMgnt</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<dropwizard.version>0.8.2</dropwizard.version>
<mainClass>com.drivedge.hotel2.HotelMgntApplication</mainClass>
</properties>
<dependencies>
<dependency>
<groupId>io.dropwizard</groupId>
<artifactId>dropwizard-core</artifactId>
<version>${dropwizard.version}</version>
</dependency>
<dependency>
<groupId>io.dropwizard</groupId>
<artifactId>dropwizard-hibernate</artifactId>
<version>${dropwizard.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>2.5.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>javax.persistence</artifactId>
<version>2.0.0</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-shade-plugin</artifactId>
<version>1.7</version>
<configuration>
<createDependencyReducedPom>true</createDependencyReducedPom>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>${mainClass}</mainClass>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
</transformers>
<!-- exclude signed Manifests -->
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>${mainClass}</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-source-plugin</artifactId>
<version>2.1.2</version>
<executions>
<execution>
<id>attach-sources</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.8.1</version>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.0</version>
<configuration>
<reportPlugins>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.4</version>
<configuration>
<dependencyLocationsEnabled>false</dependencyLocationsEnabled>
<dependencyDetailsEnabled>false</dependencyDetailsEnabled>
</configuration>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.8.1</version>
</plugin>
</reportPlugins>
</configuration>
</plugin>
</plugins>
</build>
</project>
我的配置文件:-
package com.drivedge.hotel2;
import io.dropwizard.Configuration;
import com.fasterxml.jackson.annotation.JsonProperty;
import io.dropwizard.db.DataSourceFactory;
import javax.validation.Valid;
import javax.validation.constraints.*;
//import org.apache.tomcat.jdbc.pool.DataSourceFactory;
public class HotelMgntConfiguration extends Configuration {
/*// /**
* A factory used to connect to a relational database management system.
* Factories are used by Dropwizard to group together related configuration
* parameters such as database connection driver, URI, password etc.
*/
@NotNull
@Valid
@JsonProperty
private DataSourceFactory database;
/**
* A getter for the database factory.
*
* @return An instance of database factory deserialized from the
* configuration file passed as a command-line argument to the application.
*/
public DataSourceFactory getDataSourceFactory() {
return database;
}
public void setDatabase(DataSourceFactory database) {
this.database = database;
}
}
我哪里出错了？我对 Dropwizard 的东西真的很陌生。任何帮助将不胜感激!
最佳答案
从 config.yml 中删除 logging: 或像 example 那样配置日志记录.
关于java - Dropwizard:config.yml 有错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41501829/