博客

官方案例地址：

https://github.com/hyperledger/fabric-chaincode-java/tree/master/examples/fabric-contract-example-maven ，

这个案例无法直接使用 。

我们知道老版本是将智能合约实现ChaincodeBase 然后 在pom文件的mainClass 里面 写入智能合约引用 。 2.0版本略有不同 你只需要实现

ContractInterface接口然后在pom文件的mainClass 里面 写入org.hyperledger.fabric.contract.ContractRouter 即可 注意不是 你开发的做能合约引用 ，而且 只要在你的方法里面加上

@Transaction 注解 就不再需要像以前一样在Invoke里面各种判断方法名了。


java maven 形式的智能合约安装很慢，是因为每次安装的时候都会从maven仓库去下载依赖，我们可以在pom.xml里面修改仓库地址


<?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.example.insurance</groupId>
    <artifactId>chaincode</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>

        <!-- Generic properties -->
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <!-- fabric-chaincode-java -->
        <fabric-chaincode-java.version>2.3.0</fabric-chaincode-java.version>

        <!-- Logging -->
        <logback.version>1.0.13</logback.version>
        <slf4j.version>1.7.5</slf4j.version>

        <!-- Test -->
        <junit.jupiter.version>5.3.0-RC1</junit.jupiter.version>
        <junit.platform.version>1.3.0-RC1</junit.platform.version>

        <fastjson.version>1.2.45</fastjson.version>

    </properties>

    <repositories>
        <repository>
            <id>central</id>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>jitpack.io</id>
            <url>https://www.jitpack.io</url>
        </repository>
        <repository>
            <id>artifactory</id>
            <url>https://hyperledger.jfrog.io/hyperledger/fabric-maven</url>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>central</id>
            <name>Maven China Mirror</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

    <dependencies>

        <!-- fabric-chaincode-java -->
        <dependency>
            <groupId>org.hyperledger.fabric-chaincode-java</groupId>
            <artifactId>fabric-chaincode-shim</artifactId>
            <version>${fabric-chaincode-java.version}</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.hyperledger.fabric-chaincode-java</groupId>
            <artifactId>fabric-chaincode-protos</artifactId>
            <version>${fabric-chaincode-java.version}</version>
            <scope>compile</scope>
        </dependency>


        <!-- fabric-sdk-java -->

        <!-- Logging with SLF4J & LogBack -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>${logback.version}</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.owlike</groupId>
            <artifactId>genson</artifactId>
            <version>1.5</version>
        </dependency>

        <!-- Test Artifacts -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>${junit.jupiter.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-params</artifactId>
            <version>${junit.jupiter.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>${junit.jupiter.version}</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mockito/mockito-core -->
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-core</artifactId>
            <version>2.10.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.json/json -->
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20180813</version>
        </dependency>

    </dependencies>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <!-- JUnit 5 requires Surefire version 2.22.0 or higher -->
            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.22.0</version>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.1.0</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <finalName>chaincode</finalName>
                            <transformers>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>org.hyperledger.fabric.contract.ContractRouter</mainClass>
                                </transformer>
                            </transformers>
                            <filters>
                                <filter>
                                    <!-- filter out signature files from signed dependencies, else repackaging fails with security ex -->
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>