Grails 3 升级 - 无法解析类 grails.plugin.rendering.pdf.PdfRenderingService

Question

我继承了一个基于 Grails 2.5.4 的多模块 grails 应用程序。
我安装了groovy 3.0.4和grails 3.3.11，并根据官网提供的教程(https://docs.grails.org/3.0.x/guide/upgrading.html)完成了grails升级任务。
我正在处理大量的代码调整，但在尝试构建项目时遇到了一个特定问题，我面临以下问题:

C:\repo\upgraded-app\myapp-web\grails-app\services\bitt\PdfRenderingService.groovy: 9: unable to resolve class grails.plugin.rendering.pdf.PdfRenderingService
 @ line 9, column 1.
   @Transactional
   ^

涉及的代码如下:

import com.lowagie.text.pdf.BaseFont
import grails.transaction.Transactional
import grails.util.Environment
import org.w3c.dom.Document
import org.xhtmlrenderer.pdf.ITextRenderer

@Transactional
class PdfRenderingService extends grails.plugin.rendering.pdf.PdfRenderingService {
...

我的 build.gradle 文件如下:

buildscript {
    repositories {
        mavenLocal()
        maven { url "https://repo.grails.org/grails/core" }
    }
    dependencies {
        classpath "org.grails:grails-gradle-plugin:$grailsVersion"
        classpath "org.grails.plugins:hibernate5:${gormVersion-".RELEASE"}"
        classpath "com.bertramlabs.plugins:asset-pipeline-gradle:2.15.1"
    }
}

version "0.1"
group "bitt.web"

apply plugin:"eclipse"
apply plugin:"idea"
apply plugin:"war"
apply plugin:"org.grails.grails-web"
apply plugin:"asset-pipeline"
apply plugin:"org.grails.grails-gsp"

repositories {
    mavenLocal()
    maven { url "https://repo.grails.org/grails/core" }
}

dependencies {  
    compile project(':../bitt-core')
    compile "org.springframework.boot:spring-boot-starter-logging"
    compile "org.springframework.boot:spring-boot-autoconfigure"
    compile "org.grails:grails-core"
    compile "org.springframework.boot:spring-boot-starter-actuator"
    compile "org.springframework.boot:spring-boot-starter-tomcat"
    compile "org.grails:grails-web-boot"
    compile "org.grails:grails-logging"
    compile "org.grails:grails-plugin-rest"
    compile "org.grails:grails-plugin-databinding"
    compile "org.grails:grails-plugin-i18n"
    compile "org.grails:grails-plugin-services"
    compile "org.grails:grails-plugin-url-mappings"
    compile "org.grails:grails-plugin-interceptors"
    compile "org.grails.plugins:cache"
    compile "org.grails.plugins:async"
    compile "org.grails.plugins:scaffolding"
    compile "org.grails.plugins:events"
    compile "org.grails.plugins:hibernate5"
    compile "org.hibernate:hibernate-core:5.1.16.Final"
    compile "org.grails.plugins:gsp"

    compile 'org.grails.plugins:spring-security-core:3.2.3'
    compile 'org.grails.plugins:spring-security-acl:3.2.1'
    compile 'org.grails.plugins:grails-markdown:3.0.0'
    compile 'org.grails.plugins:rendering:2.0.3'
    compile 'org.grails.plugins:excel-export:2.1'
    compile 'org.grails.plugins:grails-cookie:2.0.3'
    compile 'org.grails.plugins:spring-security-ui:3.0.2'
    compile 'org.grails.plugins:http-builder-helper:1.1.0'
    compile 'org.grails.plugins:audit-logging:3.0.6'

    console "org.grails:grails-console"
    profile "org.grails.profiles:web"
    runtime "org.glassfish.web:el-impl:2.1.2-b03"
    runtime "com.h2database:h2"
    runtime "org.postgresql:postgresql:9.4-1203-jdbc42"
    runtime "org.apache.tomcat:tomcat-jdbc"
       runtime "com.bertramlabs.plugins:asset-pipeline-grails:2.15.1"
    testCompile "org.grails:grails-gorm-testing-support"
    testCompile "org.grails.plugins:geb"
    testCompile "org.grails:grails-web-testing-support"
    testCompile "org.grails.plugins:geb:1.1.2"
    testRuntime "org.seleniumhq.selenium:selenium-htmlunit-driver:2.47.1"
    testRuntime "net.sourceforge.htmlunit:htmlunit:2.18"
    testRuntime "org.seleniumhq.selenium:selenium-chrome-driver:2.47.1"
}

bootRun {
    jvmArgs('-Dspring.output.ansi.enabled=always')
    addResources = true
    String springProfilesActive = 'spring.profiles.active'
    systemProperty springProfilesActive, System.getProperty(springProfilesActive)
}

tasks.withType(Test) {
    systemProperty "geb.env", System.getProperty('geb.env')
    systemProperty "geb.build.reportsDir", reporting.file("geb/integrationTest")
    systemProperty "webdriver.chrome.driver", System.getProperty('webdriver.chrome.driver')
    systemProperty "webdriver.gecko.driver", System.getProperty('webdriver.gecko.driver')
}

assets {
    minifyJs = true
    minifyCss = true
    includes = ["fonts/*"]
}

上面提到的代码在 Grails 2 中运行良好……但现在在 Grails 3 中引发了编译错误……知道为什么吗？
谢谢。

Answer 1

主要 Grails 版本之间的升级并不容易，因为 Gradle 配置有很大差异。
我建议你使用 Grails Starter要获取示例应用程序，请解压缩 build.gradle , gradle.properties从那里开始，并将您的旧配置(主要是依赖项)合并到其中。
配置也从 .groovy 文件更改为 .yml，请考虑迁移它们。