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Grailsの初心者です。自分のローカルMySqlデータベースにデータを保存してCRUD操作を行うだけで初めてアプリケーションを作成し始めました。私のマシンでしかし、私はデータベース自体に接続することができません。私が間違っているところで私を助けてください。grailsアプリケーションへのローカルMySqlデータベース接続の設定
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
}
}
}
}
を、図のように、私のBuildConfig.groovyファイルが設定されている：以下に示すように
マイDataSource.groovyコードです。
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"
}
}
私のコマンドプロンプトでは以下のエラーが表示されます。私はGrailsの2.5.6バージョンを使用しています、とwell.Pleaseは私を助けるように私は、GrailsのアプリケーションとJAVA_HOMEの私のlibフォルダ内のmysql-コネクタのjava-5.1.44-bin.jarをファイルを追加した
[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
これを解決し、私のデータベースに接続してデータを保存します。前もって感謝します。
あなたのbuild.gradleは何ですか？ – devbd
彼はDataSourceとBuildConfig groovyファイルのためにおそらくgrails 2.Xを使用しています – user615274
完全なstacktraceを提供してください。ドライバがビルドパスに存在しないようです。 'ClassNotFoundExceptionによって引き起こされた：class com.mysql.jdbc.Driver' – devbd