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| <h1 class="page__title" itemprop="headline">FAQ |
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| <ol> |
| <li> |
| <p><strong>Q: What need to be cautious when using Java-Chassis?</strong></p> |
| |
| <p>A: There are a few restrictions when using Java-Chassis:</p> |
| <ul> |
| <li>Before version 0.3.0-SNAPSHOT, it does not support annotations like <code class="language-plaintext highlighter-rouge">@GetMapping</code>.</li> |
| <li>When using the same HTTP request method, e.g. GET, the method name need to be unique as it will become operation ID when swagger generates contracts.</li> |
| <li>Class and method name need to be public.</li> |
| </ul> |
| </li> |
| <li> |
| <p><strong>Q: When using the <em>spring-boot-starter-provider</em> dependency, property like <code class="language-plaintext highlighter-rouge">spring.main.web-environment</code> not working in <em>application.yml</em> file.</strong></p> |
| |
| <p>A: When you need both the starter provider dependency and the servlet, you need to declare <code class="language-plaintext highlighter-rouge">spring.main.web-environment</code> in <em>application.properties</em> file or declare it in <em>application.yml</em> file and create an empty <em>application.properties</em> file.</p> |
| </li> |
| <li> |
| <p><strong>Q: What’s the dependency differences between gateway and other microservices?</strong></p> |
| |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt"><groupId></span>org.apache.servicecomb<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-starter-provider<span class="nt"></artifactId></span> |
| </code></pre></div> </div> |
| |
| <p>A: Gateway depends on not only the <code class="language-plaintext highlighter-rouge">spring-boot-starter-provider</code>, but also the <code class="language-plaintext highlighter-rouge">spring-boot-starter-discovery</code>. This can refer to the <em>manger</em> implementation of <a href="https://github.com/ServiceComb/LinuxCon-Beijing-WorkShop">LinuxCon-Beijing-Workshop</a>.</p> |
| </li> |
| <li> |
| <p><strong>Q: Do gateway need to configure assembly like the other microservices? Is <em>/maven/gateway</em> the default path of the docker maven plugin?</strong></p> |
| |
| <p>A: Yes. Docker maven plugin relies on the assembly files to generate docker image. <em>/maven</em> is the default path of docker maven plugin and <em>/gateway</em> is the path defined in the assembly file.</p> |
| </li> |
| <li> |
| <p><strong>Q: Are there any restrictions of the return type of our API? Should it be the type of ResponseEntity?</strong></p> |
| |
| <p>A: No, examples can refer to <a href="https://github.com/apache/servicecomb-java-chassis/blob/master/integration-tests/springmvc-tests/springmvc-tests-common/src/test/java/org/apache/servicecomb/demo/springmvc/tests/SpringMvcIntegrationTestBase.java">the implementation of integration-test</a> in java-chassis.</p> |
| </li> |
| <li> |
| <p><strong>Q: Our API can not be accessed after microservices are up. It just returns <em>404 Not Found</em>. The codes we use is as follows:</strong></p> |
| |
| <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@RestController</span> |
| <span class="nd">@RestSchema</span><span class="o">(</span><span class="n">schemaId</span> <span class="o">=</span> <span class="s">"worker"</span><span class="o">)</span> |
| <span class="kd">public</span> <span class="kd">class</span> <span class="nc">WorkerController</span> <span class="o">{</span> |
| <span class="nd">@RequestMapping</span><span class="o">(</span><span class="n">value</span><span class="o">=</span><span class="s">"/count"</span><span class="o">,</span> <span class="n">method</span><span class="o">=</span><span class="nc">RequestMethod</span><span class="o">.</span><span class="na">GET</span><span class="o">)</span> |
| <span class="kd">public</span> <span class="kt">int</span> <span class="nf">getWorkerNumbers</span><span class="o">()</span> <span class="o">{</span> |
| <span class="o">...</span> |
| <span class="o">}</span> |
| <span class="o">}</span> |
| </code></pre></div> </div> |
| |
| <p>A: Without specifying the base path, ServiceComb will use the classname as the base path. Hence, the path should be <code class="language-plaintext highlighter-rouge">/WorkerController/count</code> in the previous code. If you want to access path like <code class="language-plaintext highlighter-rouge">/count</code>, you need to specify base path as <code class="language-plaintext highlighter-rouge">/</code> as follows:</p> |
| <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@RequestMapping</span><span class="o">(</span><span class="n">value</span> <span class="o">=</span> <span class="s">"/"</span><span class="o">)</span> |
| <span class="kd">public</span> <span class="kd">class</span> <span class="nc">WorkerController</span> <span class="o">{}</span> |
| </code></pre></div> </div> |
| </li> |
| <li> |
| <p><strong>Q: What's the default base path if I have not declared the value of RequestMapping annotation?</strong></p> |
| |
| <p>A: Supposed the class name of your controller is <em>HelloController</em>, the base path is /HelloController.</p> |
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