How to show plugins' versions in Gradle

To show plugins' versions,

You can use the following command:

gradle dependencies

If you apply `jacoco` plugin as follows:

apply plugin: 'jacoco'

you will see the following result:

jacocoAgent - The Jacoco agent to use to get coverage data.
\--- org.jacoco:org.jacoco.agent:0.6.2.201302030002                                                                    
                           
jacocoAnt - The Jacoco ant tasks to use to get execute Gradle tasks.
\--- org.jacoco:org.jacoco.ant:0.6.2.201302030002                                                                    
     +--- org.jacoco:org.jacoco.core:0.6.2.201302030002
     |    \--- org.ow2.asm:asm-all:4.1
     +--- org.jacoco:org.jacoco.report:0.6.2.201302030002
     |    +--- org.jacoco:org.jacoco.core:0.6.2.201302030002 (*)
     |    \--- org.ow2.asm:asm-all:4.1
     \--- org.jacoco:org.jacoco.agent:0.6.2.201302030002

Reference:
https://gradle.org/docs/current/userguide/tutorial_gradle_command_line.html

How to reference test classes in a depedent project in Gradle

If you have the following depedency:

    compile project(":some-common")

you can't use `some-common`'s test classes.

Add the following dependency for test classes:

    testCompile project(":some-common").sourceSets.test.output

Reference:
http://stackoverflow.com/questions/5644011/multi-project-test-dependencies-with-gradle

How to `cherry-pick` a commit in a remote branch in Git

In Git, to `cherry-pick` a commit in a remote branch, do the following:

git fetch
git checkout issue-1004
git checkout master
git cherry-pick a2d64cb52f7ef25ad52f18667ae081cddccc7153

Reference:
http://stackoverflow.com/questions/13788945/how-to-cherry-pick-from-a-remote-branch

How to checkout a remote branch in Git

In Git, to checkout a remote branch, do the following:

git fetch
git checkout issue-1004

Reference:
http://stackoverflow.com/questions/1783405/checkout-remote-git-branch

How to show remote branches in Git

In Git, to show remote branches, use the following command:

git branch -a

or

git remote show origin

Reference:
http://gitready.com/intermediate/2009/02/13/list-remote-branches.html

Caused by: java.io.FileNotFoundException: class path resource [repository/naver/keyword/keyword_map.txt] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:/xxx.jar!/xxx.txt

When you try to access a file in a .jar file as follows:

String resourceLocation = "classpath:xxx.txt";
File file = ResourceUtils.getFile(resourceLocation);

you will encounter the following exception:

Caused by: java.io.FileNotFoundException: class path resource [repository/naver/keyword/keyword_map.txt] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:/xxx.jar!/xxx.txt        at org.springframework.util.ResourceUtils.getFile(ResourceUtils.java:212)

You can use the following code instead:

String resourceLocation = "/xxx.txt";
InputStream is = getClass().getResourceAsStream(resourceLocation);

Caused by: net.sf.ehcache.CacheException: Another unnamed CacheManager already exists in the same VM.

When you run unit tests (strictly speaking, integration tests),

you can encounter the following exception:

Caused by: net.sf.ehcache.CacheException: Another unnamed CacheManager already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following:
1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary
2. Shutdown the earlier cacheManager before creating new one with same name.
The source of the existing CacheManager is: InputStreamConfigurationSource [stream=java.io.BufferedInputStream@6fd1660]
at net.sf.ehcache.CacheManager.assertNoCacheManagerExistsWithSameName(CacheManager.java:628)
at net.sf.ehcache.CacheManager.init(CacheManager.java:392)

You can fix it by setting `shared` of `EhCacheManagerFactoryBean` to `true` as follows:

  @Bean
  public EhCacheManagerFactoryBean ehcache() {
    EhCacheManagerFactoryBean ehCacheManagerFactoryBean = new EhCacheManagerFactoryBean();
    ehCacheManagerFactoryBean.setConfigLocation(new ClassPathResource("ehcache/ehcache.xml"));
ehCacheManagerFactoryBean.setShared(true);
    return ehCacheManagerFactoryBean;
  }

Reference:
http://stackoverflow.com/questions/10013288/another-unnamed-cachemanager-already-exists-in-the-same-vm-ehcache-2-5

{"cause":null,"message":"No @Param annotation found on query method findByLastName for parameter null"}

When you use Spring Data REST and get the following URL:

http://localhost:18080/api/customers/search/findByLastName?lastName=Bauer

you can encounter the following error:

{"cause":null,"message":"No @Param annotation found on query method findByLastName for parameter null"}

Change the following code:

List<Customer> findByLastName(String lastName);

to the following code:

List<Customer> findByLastName(@Param("lastName") String lastName);