jrxml 使用 gradle 到 jasper

问题描述 投票：0回答：2

尝试使用 gradle 内的 ant 任务编译 jrxml 时，未生成 jasper 文件。在 gradle 控制台中可以看到以下错误。请就此提供指点。以下是 ant 任务的 gradle 构建文件的错误。

注意：所有需要的jasper和其他依赖jar都放在libs目录下

错误：

2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] ERROR: Could not compile report [/builds/DFSDocker.Admin/rhel_dec_release/compileux/customjrxml/src/main/jasperreports/UBBDFail.jrxml]. Exception: net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file:
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] calculator_UBBDFail_1603897790979_43679: 24: unable to resolve class net.sf.jasperreports.compilers.GroovyEvaluator 
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc]  @ line 24, column 1.
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] calculator_UBBDFail_1603897790979_43679: 34: unable to resolve class JRFillParameter 
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc]  @ line 34, column 5.
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] calculator_UBBDFail_1603897790979_43679: 35: unable to resolve class JRFillParameter 
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc]  @ line 35, column 5.
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] calculator_UBBDFail_1603897790979_43679: 36: unable to resolve class JRFillParameter 
2020-10-28T15:09:51.520+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc]  @ line 36, column 5.
2020-10-28T15:09:51.521+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] calculator_UBBDFail_1603897790979_43679: 37: unable to resolve class JRFillParameter 
2020-10-28T15:09:51.521+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc]  @ line 37, column 5.
2020-10-28T15:09:51.521+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] calculator_UBBDFail_1603897790979_43679: 38: unable to resolve class JRFillParameter 
2020-10-28T15:09:51.521+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc]  @ line 38, column 5.
2020-10-28T15:09:51.521+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc] calculator_UBBDFail_1603897790979_43679: 39: unable to resolve class JRFillParameter 
2020-10-28T15:09:51.521+0000 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:jrc]  @ line 39, column 5.

build.gradle：

apply plugin: 'java'
repositories {
    mavenCentral()
    flatDir {
      println 'in repositories'
      dirs 'libs'
    }
}

configurations.create('jasperreports')
configurations.jasperreports {
 transitive = true
}

dependencies {
    jasperreports fileTree(dir: 'libs',include: '*.jar')
}

task compileJasperJava {
    def jasperSourceDir = file('customjrxml/src/main/jasperreports')
    def jasperTargetDir = file('customjrxml/build/classes/main/jasperreports')
    def compiler = file('customjrxml/build/classes/main/jasperreports')
    ant {
        taskdef(name: 'jrc', classname: 'net.sf.jasperreports.ant.JRAntCompileTask', classpath: configurations.jasperreports.asPath)
        jasperTargetDir.mkdirs()
        jrc(srcdir: jasperSourceDir, destdir:jasperTargetDir,compiler:'net.sf.jasperreports.compilers.JRGroovyCompiler') {
            include(name:'**/*.jrxml')
        }
    }
}

classes.dependsOn compileJasperJava
gradle ant jasper-reports
2个回答
0
投票

在 build.gradle 下面添加突出显示的（类路径块 - 使用前删除 **）解决了 jasper 生成问题。

apply plugin: 'java'
repositories {
    mavenCentral()
    flatDir {
      println 'in repositories'
      dirs 'libs'
    }
}

configurations.create('jasperreports')
configurations.jasperreports {
 transitive = true
}

dependencies {
    jasperreports fileTree(dir: 'libs',include: '*.jar')
}

task compileJasperJava {
    def jasperSourceDir = file('customjrxml/src/main/jasperreports')
    def jasperTargetDir = file('customjrxml/build/classes/main/jasperreports')
    ant {
        taskdef(name: 'jrc', classname: 'net.sf.jasperreports.ant.JRAntCompileTask', classpath: configurations.jasperreports.asPath)
        jasperTargetDir.mkdirs()
        jrc(srcdir: jasperSourceDir, destdir:jasperTargetDir) {
            include(name:'**/*.jrxml')
            **classpath {
                pathElement(path: configurations.jasperreports.asPath)
            }**
        }
    }
}

classes.dependsOn compileJasperJava

参考文章：http://gradle.1045684.n5.nabble.com/Classpath-issue-with-jasperreports-taskdef-td3275141.html

0
投票

上面的 anwser 几乎对我有用，但由于我必须做出一些更改，所以我决定在这里分享我的解决方案。

我下面的代码需要在您的

build.gradle.kts
中。我删除了我的特定代码以避免任何混淆，因为我正在使用 Spring Boot 插件和一些其他构建约定。

这是我必须使用 gradle kotlin 语法添加到我的 

build.gradle.kts
中的内容：

val jasperreports: Configuration by configurations.creating

dependencies {
    jasperreports("net.sf.jasperreports:jasperreports:$jasperVersion")
    
    // I believe JR version 7 started to generate multiple packages
    // Because of this, you need to add this dependency as well to find ant task
    jasperreports("net.sf.jasperreports:jasperreports-ant:$jasperVersion")

    // Don't forget to add other needed dependencies for your report
    jasperreports("net.sf.jasperreports:jasperreports-barbecue:$jasperVersion")
    jasperreports("net.sf.jasperreports:jasperreports-barcode4j:$jasperVersion")

    // This dependency is needed for compilation.
    jasperreports("net.sf.jasperreports:jasperreports-jdt:$jasperVersion")
}

val compileJasperReports =
    tasks.register("compileJasperReports") {
      description = "Compiles source jasper reports files."

      doLast {
        println("running compileJasperReports task")

        val jasperSourcesDirs = sourceSets.main.get().resources.sourceDirectories.files
        val jasperTargetDir = sourceSets.main.get().output.resourcesDir
        println("jasperTargetDir = $jasperTargetDir")

        jasperTargetDir!!.mkdirs()

        jasperSourcesDirs.forEach { jasperSourceDir ->
          println("Processing jasper reports in source dir = $jasperSourceDir")

          ant.withGroovyBuilder {
            "taskdef"(
                "name" to "jrc",
                "classname" to "net.sf.jasperreports.ant.JRAntCompileTask",
                "classpath" to jasperreports.asPath,
            )

            "jrc"(
                "srcdir" to jasperSourceDir,
                "destdir" to jasperTargetDir,
                "includes" to "*.jrxml",
            )
          }
        }
      }
    }

tasks.processResources { finalizedBy(compileJasperReports) }

重要的两点：

  1. 请注意，我仅在 
    compileJasperReports
    之后添加了 
    processResources
    任务。由于某种原因，在某些环境中，
    processResources
    在进行任何复制之前正在清理输出文件夹。这就是为什么我必须使用 
    finalizedBy
    而不是 
    dependsOn
    。如果您要将 jrxml 复制到输出资源，您可以删除 forEach 并使用源文件夹作为资源输出。
  2. 我没有使用固定的源和目标位置，而是使用源集来重用任何现有的项目配置。

希望这可以帮助任何为此苦苦挣扎的人。

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