Redmine/Chiliproject Java API.

• Uses Redmine's REST API (don't forget to enable it in Redmine server settings).
• Does not require any plugins installed on Redmine/Chiliproject server.
• Runs on any standard Java 7+ platform (Android does not have standard Java).
• Supports HTTP proxy
• Supports GZipped responses from servers
• Uses SLF4J for logging. Provide your own SLF4J binding
• [Supported Redmine versions] (https://github.com/taskadapter/redmine-java-api/wiki/Redmine-versions-compatibility)
• Available in Maven Central (binary plus sources).

We recommend using a modern build system like Gradle to build this library locally. Gradle dependency:

dependencies {
    compile 'com.taskadapter:redmine-java-api:<current-version>'
}

Check the latest release version in Maven Central

You can also use some legacy system like Maven if you can't upgrade to Gradle for some reason.

Sample code.

Get list of issues

String uri = "https://www.hostedredmine.com";
String apiAccessKey = "somekey";
String projectKey = "taskconnector-test";
Integer queryId = null; // any

RedmineManager mgr = RedmineManagerFactory.createWithApiKey(uri, apiAccessKey);
List<Issue> issues = mgr.getIssueManager().getIssues(projectKey, queryId);
for (Issue issue : issues) {
    System.out.println(issue.toString());
}

Get related objects when retrieving issues

issue = issueManager.getIssueById(123, Include.journals, Include.relations, Include.attachments, 
                          Include.changesets, Include.watchers);
journals = issue.getJournals();

Create an issue

Issue issue = IssueFactory.createWithSubject("test123");
Version ver = VersionFactory.create(512);
issue.setTargetVersion(ver);
IssueCategory cat = IssueCategoryFactory.create(673);
issue.setCategory(cat);
ProjectManager projectManager = manager.getProjectManager();
Project projectByKey = projectManager.getProjectByKey("testid");
issue.setProject(projectByKey);
manager.getIssueManager().createIssue(issue);

Get issue by Id

Issue retrievedIssue = issueManager.getIssueById(123);

Get all projects

List<Project> projects = mgr.getProjectManager().getProjects();

Free-form search for users

Map<String, String> params = new HashMap<>();
params.put("name", name);
List<User> list = userManager.getUsers(params);

Create a group and add user to it

Group template = GroupFactory.create("group " + System.currentTimeMillis());
Group group = userManager.createGroup(template);
User newUser = userManager.createUser(UserGenerator.generateRandomUser());
userManager.addUserToGroup(newUser, group);

Delete user

userManager.deleteUser(123);