Question

我想使用com.google中的gson库，并尝试通过pom，模块maven import等将其添加到我的Maven项目中，但是即使它显示在我的外部库中，Intellij告诉我，包不存在。我尝试重新加载，重新启动，删除它，使chche无效等，没有任何帮助，请问有人可以帮忙吗？

import com.google.gson

和特定的错误代码：

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>

Answer 1

您输入的com.google.gson错误；应该将其替换为 import com.google.gson。 *或 import com.google.gson.Gson ，如果这样做没有帮助，请尝试通过Maven重新导入依赖项工具（screenshot）。希望会有所帮助。

Answer 2

转到“文件”->“项目结构”，单击enter image description here 侧的“库”选项卡。您可以添加或删除任何库。

Intellij Java Maven Gson导入不起作用-软件包不存在

2 个答案: