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Grails의 초보자입니다. 로컬 MySql 데이터베이스에 데이터를 저장하여 CRUD 작업을 수행하기위한 첫 번째 응용 프로그램을 작성하기 시작했으며 입력 한 데이터를보고 싶습니다. 내 컴퓨터에서. 그러나 데이터베이스 자체에 연결할 수 없습니다. 내가 잘못한 곳에서 나를 도와주세요.grails 응용 프로그램에 대한 로컬 MySql 데이터베이스 연결 설정
dataSource {
pooled = true
jmxExport = true
driverClassName = com.mysql.jdbc.Driver
dialect = org.hibernate.dialect.MySQL5InnoDBDialect
username = "test"
password = "test"
}
environments {
development {
dataSource {
dbCreate = "update"
url = "jdbc:mysql://localhost:3306/librarydb"
}
}
test {
dataSource {
dbCreate = "update"
url = "jdbc:mysql://localhost:3306/librarydb"
//url = "jdbc:h2:mem:testDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE"
}
}
production {
dataSource {
dbCreate = "update"
url = "jdbc:mysql://localhost:3306/librarydb"
//url = "jdbc:h2:prodDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE"
properties {
// See http://grails.org/doc/latest/guide/conf.html#dataSource for documentation
jmxEnabled = true
initialSize = 5
maxActive = 50
minIdle = 5
maxIdle = 25
maxWait = 10000
maxAge = 10 * 60000
timeBetweenEvictionRunsMillis = 5000
minEvictableIdleTimeMillis = 60000
validationQuery = "SELECT 1"
validationQueryTimeout = 3
validationInterval = 15000
testOnBorrow = true
testWhileIdle = true
testOnReturn = false
jdbcInterceptors = "ConnectionState"
defaultTransactionIsolation =
java.sql.Connection.TRANSACTION_READ_COMMITTED
}
}
}
}
을 그림과 같이 내 BuildConfig.groovy 파일이 구성되어 다음과 같이
내 DataSource.groovy에 코드입니다.
grails.servlet.version = "3.0" // Change depending on target container
compliance (2.5 or 3.0)
grails.project.class.dir = "target/classes"
grails.project.test.class.dir = "target/test-classes"
grails.project.test.reports.dir = "target/test-reports"
grails.project.work.dir = "target/work"
grails.project.target.level = 1.6
grails.project.source.level = 1.6
//grails.project.war.file = "target/${appName}-${appVersion}.war"
grails.project.fork = [
// configure settings for compilation JVM, note that if you alter the Groovy
version forked compilation is required
// compile: [maxMemory: 256, minMemory: 64, debug: false, maxPerm: 256,
daemon:true],
// configure settings for the test-app JVM, uses the daemon by default
test: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256,
daemon:true],
// configure settings for the run-app JVM
run: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256,
forkReserve:false],
// configure settings for the run-war JVM
war: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256,
forkReserve:false],
// configure settings for the Console UI JVM
console: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256]
]
grails.project.dependency.resolver = "maven" // or ivy
grails.project.dependency.resolution = {
// inherit Grails' default dependencies
inherits("global") {
// specify dependency exclusions here; for example, uncomment this to
disable ehcache:
// excludes 'ehcache'
}
log "error" // log level of Ivy resolver, either 'error', 'warn', 'info',
'debug' or 'verbose'
checksums true // Whether to verify checksums on resolve
legacyResolve false // whether to do a secondary resolve on plugin
installation, not advised and here for backwards compatibility
repositories {
inherits true // Whether to inherit repository definitions from plugins
grailsPlugins()
grailsHome()
mavenLocal()
grailsCentral()
mavenCentral()
// uncomment these (or add new ones) to enable remote dependency resolution from public Maven repositories
//mavenRepo "http://repository.codehaus.org"
//mavenRepo "http://download.java.net/maven/2/"
//mavenRepo "http://repository.jboss.com/maven2/"
}
dependencies {
// specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes e.g.
runtime 'mysql:mysql-connector-java:5.1.44'
// runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
test "org.grails:grails-datastore-test-support:1.0.2-grails-2.4"
}
plugins {
// plugins for the build system only
build ":tomcat:7.0.70" // or ":tomcat:8.0.22"
// plugins for the compile step
compile ":scaffolding:2.1.2"
compile ':cache:1.1.8'
// asset-pipeline 2.0+ requires Java 7, use version 1.9.x with Java 6
compile ":asset-pipeline:2.5.7"
// plugins needed at runtime but not for compilation
runtime ":hibernate4:4.3.10" // or ":hibernate:3.6.10.18"
runtime ":database-migration:1.4.0"
runtime ":jquery:1.11.1"
// Uncomment these to enable additional asset-pipeline capabilities
//compile ":sass-asset-pipeline:1.9.0"
//compile ":less-asset-pipeline:1.10.0"
//compile ":coffee-asset-pipeline:1.8.0"
//compile ":handlebars-asset-pipeline:1.3.0.3"
}
}
하지만 아래 명령 프롬프트에서 오류가 발생합니다.
[localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool.
Message: class com.mysql.jdbc.Driver
Line | Method
->> 266 | run in java.util.concurrent.FutureTask
1149 | runWorker in java.util.concurrent.ThreadPoolExecutor
624 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
748 | run in java.lang.Thread
Caused by ClassNotFoundException: class com.mysql.jdbc.Driver
->> 381 | findClass in java.net.URLClassLoader
424 | loadClass in java.lang.ClassLoader
348 | forName . in java.lang.Class
266 | run in java.util.concurrent.FutureTask
1149 | runWorker in java.util.concurrent.ThreadPoolExecutor
624 | run in java.util.concurrent.ThreadPoolExecutor$Worker
748 | run . . . in java.lang.Thread
Error |
2017-11-21 23:22:20,629 [localhost-startStop-1] ERROR
pool.ConnectionPool - Unable to create initial connections of pool.
Message: class com.mysql.jdbc.Driver
Line | Method
->>266 | run in java.util.concurrent.FutureTask
나는 Grails의 2.5.6 버전을 사용하고, 나는 나를 도와 well.Please 나의 LIB Grails 애플리케이션의 폴더와 JAVA_HOME에 MySQL의 커넥터 - 자바-5.1.44-bin.jar를 파일을 추가 한 이를 해결하고 내 데이터베이스에 연결하여 데이터를 저장하십시오. 미리 감사드립니다.
build.gradle은 무엇입니까? – devbd
그는 DataSource와 BuildConfig 그루비 파일 때문에 아마도 grails 2.X를 사용하고 있습니다 – user615274
전체 스택 추적을 제공하십시오. 드라이버가 빌드 경로에 존재하지 않는 것 같습니다. 'ClassNotFoundException : Caused by class com.mysql.jdbc.Driver' – devbd