java - Intellij Java Maven Gson 导入不起作用 - 包不存在
问题描述
我想使用来自 com.google 的 gson 库,并尝试通过 pom、模块 maven 导入等将它添加到我的 Maven 项目中,但即使它出现在我的外部库中,Intellij 告诉我,那个包没有不存在。我尝试重新加载,重新启动,删除它,使 chache 无效等,没有任何帮助,有人可以帮忙吗?
import com.google.gson
和具体的错误代码:
Error:(9, 18) java: package com.google does not exist
我的 .pom 文件:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.Avalon</groupId>
<artifactId>Battlesheet</artifactId>
<version>1.0-SNAPSHOT</version>
<name>Avalon</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.14</maven.compiler.source>
<maven.compiler.target>1.14</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-controls</artifactId>
<version>13</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-fxml</artifactId>
<version>15-ea+6</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-assembly-plugin -->
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.3.0</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.openjfx</groupId>
<artifactId>javafx-maven-plugin</artifactId>
<version>0.0.4</version>
<configuration>
<mainClass>assembly.Launcher</mainClass>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>make-assembly</id> <!-- this is used for inheritance merges -->
<phase>package</phase> <!-- bind to the packaging phase -->
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>assembly.Launcher</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
</plugins>
</build>
</project>
解决方案
你错了 import com.google.gson; 它应该被import com.google.gson 替换。* 或导入 com.google.gson.Gson,如果没有帮助,请尝试通过 Maven 工具重新导入依赖项,(截图)。希望这会有所帮助。