Spring boot JPA+QueryDSL 免配置生成Q文件
作者：互联网
网上生成Q文件总有各种配置，其实Q文件是有自己的规则的，自己生成即可，idea的数据库映射实体生成刚好可以做到同步生成Q文件，我修改了自带的groovy文件，可以同时生成映射实体和Q文件，项目引入JPA和怎么配置idea数据源，这个教程很多，直接给代码了，生成按键路径如下图
下面是Generate POJOs.groovy文件的代码，可以直接搜索到该文件，复制之后再按上面的操作生成即可，下面的代码还可以根据自己需要生成其他代码，比如我的Generate Repository.groovy就是用来生成持久层接口和实现类的
import com.intellij.database.model.DasTable
import com.intellij.database.model.ObjectKind
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil
import java.text.SimpleDateFormat
/*
* Available context bindings:
* SELECTION Iterable<DasObject>
* PROJECT project
* FILES files helper
*/
packageName = "com.sample;"
typeMapping = [
// (~/(?i)tinyint/) : ["Boolean","BooleanPath","createBoolean",""],
(~/(?i)bigint/) : ["Long","NumberPath","createNumber","Long.class"],
(~/(?i)tinyint|smallint|mediumint|int/) : ["Integer","NumberPath","createNumber","Integer.class"],
(~/(?i)real/) : ["Double","NumberPath","createNumber","Double.class"],
(~/(?i)float|double|decimal/) : ["BigDecimal","NumberPath","createNumber","BigDecimal.class"],
(~/(?i)longblob|blob|mediumblob/) : ["Byte[]","ArrayPath","createArray","Byte.class"],
(~/(?i)datetime|timestamp/) : ["java.time.LocalDateTime","DateTimePath","createDateTime","java.time.LocalDateTime.class"],
(~/(?i)date/) : ["java.time.LocalDate","DateTimePath","createDateTime","java.time.LocalDate.class"],
(~/(?i)time/) : ["java.time.LocalTime","DateTimePath","createDateTime","java.time.LocalTime.class"],
(~/(?i)/) : ["String","StringPath","createString",""]
]
keywords = ["abstract", "assert", "boolean",
"break", "byte", "case", "catch", "char","const",
"continue", "default", "do", "double", "else", "extends", "false",
"final", "finally", "float", "for", "goto", "if", "implements",
"import", "instanceof", "int", "interface", "long", "native",
"new", "null", "package", "private", "protected", "public",
"return", "short", "static", "strictfp", "super", "switch",
"synchronized", "this", "throw", "throws", "transient", "true",
"try", "void", "volatile", "while" ]
FILES.chooseDirectoryAndSave("Choose directory", "Choose where to store generated files") { dir ->
SELECTION.filter { it instanceof DasTable && it.getKind() == ObjectKind.TABLE }.each { generate(it, dir) }
}
def generate(table, dir) {
def className = javaName(table.getName(), true)
def fields = calcFields(table)
packageName = getPackageName(dir)
PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(new FileOutputStream(new File(dir, className + ".java")), "UTF-8"))
printWriter.withPrintWriter { out -> generate(out, className, fields, table) }
// 单独生成Q文件
printWriter = new PrintWriter(new OutputStreamWriter(new FileOutputStream(new File(dir, "Q"+className + ".java")), "UTF-8"))
printWriter.withPrintWriter { out -> generateQ(out, className, fields, table) }
// new File(dir, className + ".java").withPrintWriter { out -> generate(out, className, fields,table) }
}
// 获取包所在文件夹路径
def getPackageName(dir) {
return dir.toString().replaceAll("\\\\", ".").replaceAll("/", ".").replaceAll("^.*src(\\.main\\.java\\.)?", "") + ";"
}
def generate(out, className, fields, table) {
out.println "package $packageName"
out.println ""
out.println "import lombok.*;"
out.println "import javax.persistence.Column;"
out.println "import javax.persistence.Entity;"
out.println "import javax.persistence.Table;"
out.println "import javax.persistence.Id;"
out.println "import javax.persistence.GeneratedValue;"
out.println "import java.io.Serializable;"
out.println "import org.hibernate.annotations.DynamicInsert;"
out.println "import org.hibernate.annotations.DynamicUpdate;"
Set types = new HashSet()
fields.each() {
types.add(it.type)
}
if (types.contains("Date")) {
out.println "import java.util.Date;"
}
if (types.contains("BigDecimal")) {
out.println "import java.math.BigDecimal;"
}
if (types.contains("InputStream")) {
out.println "import java.io.InputStream;"
}
out.println ""
out.println "/**\n" +
" * @Description \n" +
" * @Author system\n" + //1. 修改idea为自己名字
" * @Date " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + " \n" +
" */"
out.println ""
out.println "@AllArgsConstructor"
out.println "@NoArgsConstructor"
out.println "@Builder(toBuilder = true)"
out.println "@DynamicInsert"
out.println "@DynamicUpdate"
out.println "@Entity"
out.println "@Table ( name =\"" + table.getName() + "\" )" //2. schema = \"后面添加自己的表空间名称(mysql可以不添加, 不用这个schema属性也行)
out.println "@org.hibernate.annotations.Table(appliesTo = \""+table.getName()+"\" , comment = \""+table.getName()+"\")"
out.println "public class $className implements Serializable {"
out.println ""
out.println genSerialID()
// 生成一个固定的Q对象，兼容老版本public final static QAgentDeviceType Q = QAgentDeviceType.Q;
out.println ""
out.println "\tpublic final static Q$className Q = Q$className"+".Q;"
fields.each() {
out.println ""
// 输出注释
if (isNotEmpty(it.commoent)) {
out.println "\t/**"
out.println "\t * ${it.commoent.toString()}"
out.println "\t */"
}
if ((it.annos+"").indexOf("[@Id]") >= 0) out.println "\t@Id"
if (it.annos != "") out.println " ${it.annos.replace("[@Id]", "")}"
// 输出成员变量
out.println "\tprivate ${it.type} ${it.realName};"
}
// 输出get/set方法，使用了lombok的时候不用
fields.each() {
out.println ""
out.println "\tpublic ${it.type} get${it.name.capitalize()}() {"
out.println "\t\treturn this.${it.realName};"
out.println "\t}"
out.println ""
out.println "\tpublic void set${it.name.capitalize()}(${it.type} ${it.realName}) {"
out.println "\t\tthis.${it.realName} = ${it.realName};"
out.println "\t}"
}
// 输出toString方法
out.println ""
out.println "\t@Override"
out.println "\tpublic String toString() {"
out.println "\t\treturn \"{\" +"
fields.each() {
out.println "\t\t\t\t\t\"${it.name}='\" + ${it.realName} + '\\'' +"
}
out.println "\t\t\t\t'}';"
out.println "\t}"
// 输出字段常量
out.println ""
out.println "\t/**\n" +
"\t * JPA FIELD \n" +
"\t * \n"+
"\t * @Author system\n" + //1. 修改idea为自己名字
"\t */"
out.println "\tpublic interface Field {"
fields.each() {
// 输出注释
if (isNotEmpty(it.commoent)) {
out.println "\t\t/**"
out.println "\t\t * ${it.commoent.toString()}"
out.println "\t\t */"
}else{
out.println ""
}
// 输出成员变量
out.println "\t\t String ${it.colName.toUpperCase()} = \"${it.name}\";"
}
out.println "\t}"
out.println ""
out.println "}"
}
def generateQ(out, className, fields, table) {
def QclassName = "Q"+className
out.println "package $packageName"
out.println ""
out.println "import com.querydsl.core.types.Path;"
out.println "import com.querydsl.core.types.PathMetadata;"
out.println "import com.querydsl.core.types.dsl.EntityPathBase;"
out.println "import com.querydsl.core.types.PathMetadataFactory;"
out.println "import com.querydsl.core.types.dsl.DateTimePath;"
out.println "import com.querydsl.core.types.dsl.NumberPath;"
out.println "import com.querydsl.core.types.dsl.StringPath;"
out.println "import com.querydsl.core.types.dsl.BooleanPath;"
Set types = new HashSet()
fields.each() {
types.add(it.type)
}
if (types.contains("Date")) {
out.println "import java.util.Date;"
}
if (types.contains("BigDecimal")) {
out.println "import java.math.BigDecimal;"
}
if (types.contains("InputStream")) {
out.println "import java.io.InputStream;"
}
out.println ""
out.println "/**\n" +
" * @Description \n" +
" * @Author system\n" + //1. 修改idea为自己名字
" * @Date " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + " \n" +
" */"
out.println "public class Q$className extends EntityPathBase<$className> {"
out.println ""
out.println genSerialID()
out.println ""
out.println "\tpublic static final $QclassName Q = new $QclassName(\""+ javaName(className, false) +"\");"
fields.each() {
out.println ""
// 输出成员变量
if("".equals(it.mehtodParam)){
out.println "\tpublic final ${it.typePath} ${it.name} = this.${it.createMethod}(\"${it.name}\");"
}else{
out.println "\tpublic final ${it.typePath}<${it.type}> ${it.name} = this.${it.createMethod}(\"${it.name}\", ${it.mehtodParam});"
}
}
// 输出固定实现的三个方法
out.println ""
out.println " public Q$className(String variable) {"
out.println " super($className"+".class, PathMetadataFactory.forVariable(variable));"
out.println " }"
out.println ""
out.println " public Q$className(Path<? extends $className> path) {"
out.println " super(path.getType(), path.getMetadata());"
out.println " }"
out.println ""
out.println " public Q$className(PathMetadata metadata) {"
out.println " super($className"+".class, metadata);"
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
def comm = [
colName : col.getName(),
name : javaName(col.getName(), false),
type : typeStr[0],
commoent: col.getComment(),
annos : "\t@Column(name = \"" + col.getName() + "\" ,columnDefinition = \""+col.getDataType()+" COMMENT '"+col.getComment()+"'\" )",
typePath: typeStr[1],
createMethod: typeStr[2],
mehtodParam : typeStr[3]
]
if(keywords.any { it -> it.equals(comm.name) }){
comm.realName = comm.name+"_"
}else{
comm.realName = comm.name
}
if ("id".equals(Case.LOWER.apply(col.getName())))
comm.annos += ["@Id"]
fields += [comm]
}
}
// 这里是处理数据库表前缀的方法，这里处理的是t_xxx命名的表
// 已经修改为使用javaName, 如果有需要可以在def className = javaName(table.getName(), true)中修改为javaClassName
// 处理类名（这里是因为我的表都是以t_命名的，所以需要处理去掉生成类名时的开头的T，
// 如果你不需要去掉表的前缀，那么请查找用到了 javaClassName这个方法的地方修改为 javaName 即可）
def javaClassName(str, capitalize) {
def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
.collect { Case.LOWER.apply(it).capitalize() }
.join("")
.replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
// 去除开头的T http://developer.51cto.com/art/200906/129168.htm
s = s[1..s.size() - 1]
capitalize || s.length() == 1 ? s : Case.LOWER.apply(s[0]) + s[1..-1]
}
def javaName(str, capitalize) {
// def s = str.split(/(?<=[^\p{IsLetter}])/).collect { Case.LOWER.apply(it).capitalize() }
// .join("").replaceAll(/[^\p{javaJavaIdentifierPart}]/, "_")
// capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
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]
}
def isNotEmpty(content) {
return content != null && content.toString().trim().length() > 0
}
static String changeStyle(String str, boolean toCamel) {
if (!str || str.size() <= 1)
return str
if (toCamel) {
String r = str.toLowerCase().split('_').collect { cc -> Case.LOWER.apply(cc).capitalize() }.join('')
return r[0].toLowerCase() + r[1..-1]
} else {
str = str[0].toLowerCase() + str[1..-1]
return str.collect { cc -> ((char) cc).isUpperCase() ? '_' + cc.toLowerCase() : cc }.join('')
}
}
//生成序列化的serialVersionUID
static String genSerialID() {
return "\tprivate static final long serialVersionUID = " + Math.abs(new Random().nextLong()) + "L;"
}
标签：JPA,Spring,boot,className,new,println,import,types,out 来源： https://www.cnblogs.com/Ebird/p/16260996.html