SpringCloud 如何按主题而不是按生产者定义消息传递合同？
为了避免通用仓库中的消息合同重复，当很少有生产者将消息写到一个主题时，我们可以创建一个结构，将其余合同放置在每个生产者的文件夹中，并将消息合同放置在每个主题的文件夹中。
为了能够在生产者端进行工作，我们应该指定一个包含模式，以通过我们感兴趣的消息传递主题过滤通用存储库jar。Maven Spring Cloud Contract pluginincludedFilescontractsPathgroupid/artifactid
<plugin> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-contract-maven-plugin</artifactId> <version>${spring-cloud-contract.version}</version> <configuration> <contractsMode>REMOTE</contractsMode> <contractsRepositoryUrl>http://link/to/your/nexus/or/artifactory/or/sth</contractsRepositoryUrl> <contractDependency> <groupId>com.example</groupId> <artifactId>common-repo-with-contracts</artifactId> <version>+</version> </contractDependency> <contractsPath>/</contractsPath> <baseClassMappings> <baseClassMapping> <contractPackageRegex>.*messaging.*</contractPackageRegex> <baseClassFQN>com.example.services.MessagingBase</baseClassFQN> </baseClassMapping> <baseClassMapping> <contractPackageRegex>.*rest.*</contractPackageRegex> <baseClassFQN>com.example.services.TestBase</baseClassFQN> </baseClassMapping> </baseClassMappings> <includedFiles> <includedFile>**/${project.artifactId}/**</includedFile> <includedFile>**/${first-topic}/**</includedFile> <includedFile>**/${second-topic}/**</includedFile> </includedFiles> </configuration> </plugin>
- 为common-repo依赖项添加定制配置：
ext {
conractsGroupId = "com.example"
contractsArtifactId = "common-repo"
contractsVersion = "1.2.3"
}
configurations {
contracts {
transitive = false
}
}- 将common-repo依赖项添加到您的类路径中：
dependencies {
contracts "${conractsGroupId}:${contractsArtifactId}:${contractsVersion}"
testCompile "${conractsGroupId}:${contractsArtifactId}:${contractsVersion}"
}- 将依赖项下载到适当的文件夹：
task getContracts(type: Copy) {
from configurations.contracts
into new File(project.buildDir, "downloadedContracts")
}- 解压缩JAR：
task unzipContracts(type: Copy) {
def zipFile = new File(project.buildDir, "downloadedContracts/${contractsArtifactId}-${contractsVersion}.jar")
def outputDir = file("${buildDir}/unpackedContracts")
from zipTree(zipFile)
into outputDir
}- 清理未使用的合同：
task deleteUnwantedContracts(type: Delete) {
delete fileTree(dir: "${buildDir}/unpackedContracts",
include: "**/*",
excludes: [
"**/${project.name}/**"",
"**/${first-topic}/**",
"**/${second-topic}/**"])
}- 创建任务依赖项：
unzipContracts.dependsOn("getContracts") deleteUnwantedContracts.dependsOn("unzipContracts") build.dependsOn("deleteUnwantedContracts")
- 通过使用
contractsDslDir属性指定包含合同的目录来配置插件
contracts {
contractsDslDir = new File("${buildDir}/unpackedContracts")
}