IntelliJ IDEA 2019.3.4 利用 Generate POJOs.groovy 生成 POJO 异常

Question

我将 IDEA 版本升级到 2019.3.4 之后，利用 Generate POJOs.groovy 生成 POJO 时出现以下异常，不知大家有遇到过没？或者有什么解决思路可以分享下？

Generate POJOs.groovy: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
            Script21.groovy: 3: unable to resolve class com.intellij.database.util.DasUtil
            @ line 3, column 1.
            import com.intellij.database.util.DasUtil
            ^
            Script21.groovy: 1: unable to resolve class com.intellij.database.model.DasTable
            @ line 1, column 1.
            import com.intellij.database.model.DasTable
            ^
            Script21.groovy: 2: unable to resolve class com.intellij.database.util.Case
            @ line 2, column 1.
            import com.intellij.database.util.Case
            ^
            3 errors
            at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:309)
            at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:981)
            at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:626)
            at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:575)
            at groovy.lang.GroovyClassLoader.doParseC... (show balloon)

Generate POJOs.groovy 源代码（默认文件，未进行改动）：

import com.intellij.database.model.DasTable
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil

/*
 * Available context bindings:
 *   SELECTION   Iterable<DasObject>
 *   PROJECT     project
 *   FILES       files helper
 */

packageName = "com.demo.pojo;"
typeMapping = [
        (~/(?i)int/)                      : "long",
        (~/(?i)float|double|decimal|real/): "double",
        (~/(?i)datetime|timestamp/)       : "java.sql.Timestamp",
        (~/(?i)date/)                     : "java.sql.Date",
        (~/(?i)time/)                     : "java.sql.Time",
        (~/(?i)/)                         : "String"
]

FILES.chooseDirectoryAndSave("Choose directory", "Choose where to store generated files") { dir ->
    SELECTION.filter { it instanceof DasTable }.each { generate(it, dir) }
}

def generate(table, dir) {
    def className = javaName(table.getName(), true)
    def fields = calcFields(table)
    new File(dir, className + ".java").withPrintWriter { out -> generate(out, className, fields) }
}

def generate(out, className, fields) {
    out.println "package $packageName"
    out.println ""
    out.println ""
    out.println "public class $className {"
    out.println ""
    fields.each() {
        if (it.annos != "") out.println "  ${it.annos}"
        out.println "  private ${it.type} ${it.name};"
    }
    out.println ""
    fields.each() {
        out.println ""
        out.println "  public ${it.type} get${it.name.capitalize()}() {"
        out.println "    return ${it.name};"
        out.println "  }"
        out.println ""
        out.println "  public void set${it.name.capitalize()}(${it.type} ${it.name}) {"
        out.println "    this.${it.name} = ${it.name};"
        out.println "  }"
        out.println ""
    }
    out.println "}"
}

def calcFields(table) {
    DasUtil.getColumns(table).reduce([]) { fields, col ->
        def spec = Case.LOWER.apply(col.getDataType().getSpecification())
        def typeStr = typeMapping.find { p, t -> p.matcher(spec).find() }.value
        fields += [[
                           name : javaName(col.getName(), false),
                           type : typeStr,
                           annos: ""]]
    }
}

def javaName(str, capitalize) {
    def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
            .collect { Case.LOWER.apply(it).capitalize() }
            .join("")
            .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
    capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
}

Answer 1

classload可能没有加载到，比如classpath检查下，参考：https://blog.csdn.net/milk_36/article/details/84474522