英文:
Gradle build jar cannot find dependency at run time
问题
以下是您的翻译内容：
我在下面的 build.gradle 文件中引入了 json-simple 依赖：
apply plugin: 'java'
repositories {
mavenCentral()
}
dependencies {
testImplementation('org.junit.jupiter:junit-jupiter-api:5.4.2')
testRuntime('org.junit.jupiter:junit-jupiter-engine:5.4.2')
compile 'com.googlecode.json-simple:json-simple:1.1.1'
}
test {
useJUnitPlatform()
}
jar {
manifest {
attributes(
'Main-Class': 'src.main.java.demo.Hello'
)
}
}
我有以下使用 json-simple 的类：
package src.main.java.demo;
import org.json.simple.parser.JSONParser;
import org.json.simple.JSONObject;
public class Hello {
public String hello() {
try {
String jsonString = "{\"first\":\"Hello\",\"second\":\"world\"}";
JSONParser jspa = new JSONParser();
JSONObject job = (JSONObject) jspa.parse(jsonString);
return (String) job.get("first");
} catch (Exception e) {
return "";
}
}
public static void main(String[] args) {
System.out.println(new Hello().hello());
}
}
项目成功构建，但在运行创建的项目 jar 文件时，它显示找不到 "JSONParser" 和 "JSONObject"。这意味着这些依赖项在运行时未被添加。我应该怎么做才能将它们添加到类路径中？
谢谢！
英文:
I have below build.gradle file in which I have included json-simple dependency:
apply plugin: 'java'
repositories {
mavenCentral()
}
dependencies {
testImplementation('org.junit.jupiter:junit-jupiter-api:5.4.2')
testRuntime('org.junit.jupiter:junit-jupiter-engine:5.4.2')
compile 'com.googlecode.json-simple:json-simple:1.1.1'
}
test {
useJUnitPlatform()
}
jar {
manifest {
attributes(
'Main-Class': 'src.main.java.demo.Hello'
)
}
}
I have below class which uses json-simple:
package src.main.java.demo;
import org.json.simple.parser.JSONParser;
import org.json.simple.JSONObject;
public class Hello{
public String hello(){
try{String jsonString="{\"first\":\"Hello\",\"second\":\"world\"}";
JSONParser jspa=new JSONParser();
JSONObject job=(JSONObject)jspa.parse(jsonString);
return (String)job.get("first"); }
catch(Exception e){
return "";
}
}
public static void main(String[] args)
{
System.out.println(new Hello().hello());
}
}
The project builds successfully but on running the created jar file of project, it says it cannot find JSONParser and JSONObject. It means that these dependencies are not added at runtime. What should I do to add them to the classpath?
Thank You!
答案1
得分: 3
你应该创建一个可执行的JAR文件。请按以下方式更改你的Gradle构建文件：
对于较新版本的Gradle，使用以下代码：
jar {
manifest {
attributes 'Main-Class': 'src.main.java.demo.Hello'
}
from {
configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
}
}
对于较旧版本的Gradle，使用以下代码：
from {
configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}
英文:
You should create a fat jar. Change your build gradle like this
jar {
manifest {
attributes "Main-Class": "src.main.java.demo.Hello"
}
from {
configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it)}
}
}
for older Gradle you should use this
from {
configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论