NPE in JsonBuildHelper
muyuanjin opened this issue · comments
Your Environment(您的使用环境，您期望的结果，社区已开启国际化推广，请文心一言、讯飞星火等辅助翻译成英文，减少社区开发者的工作)
- smart-doc version: 3.0.4
- plugin version (e.g. smart-doc-maven-plugin or smart-doc-gradle-plugin): 3.0.4
- build tool version(maven or gradle): maven 3.9.5
- jdk version: 17
Expected Behavior(您期望的结果，社区已开启国际化推广，请用文心一言、讯飞星火等辅助翻译成英文，减少社区开发者的工作)
Current Behavior(当前结果，社区已开启国际化推广，请用文心一言、讯飞星火等辅助翻译成英文，减少社区开发者的工作)
[ERROR]
java.lang.NullPointerException: Cannot invoke "String.length()" because "fieldGicName" is null
at com.ly.doc.helper.JsonBuildHelper.buildJson (JsonBuildHelper.java:395)
at com.ly.doc.template.IRestDocTemplate.requestParams (IRestDocTemplate.java:643)
at com.ly.doc.template.IRestDocTemplate.buildEntryPointMethod (IRestDocTemplate.java:452)
at com.ly.doc.template.IRestDocTemplate.processApiData (IRestDocTemplate.java:96)
at com.ly.doc.template.SpringBootDocBuildTemplate.renderApi (SpringBootDocBuildTemplate.java:53)
at com.ly.doc.template.IDocBuildTemplate.getApiData (IDocBuildTemplate.java:51)
at com.ly.doc.builder.HtmlApiDocBuilder.buildApiDoc (HtmlApiDocBuilder.java:71)
at com.ly.doc.plugin.mojo.HtmlMojo.executeMojo (HtmlMojo.java:48)
at com.ly.doc.plugin.mojo.BaseDocsGeneratorMojo.execute (BaseDocsGeneratorMojo.java:168)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:328)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:316)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:174)
at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:75)
at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:162)
at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:159)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:906)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:568)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:283)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:226)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:407)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:348)
at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
Possible Solution(bug解决建议，社区已开启国际化推广，请用文心一言、讯飞星火等辅助翻译成英文，减少社区开发者的工作)
Steps to Reproduce (Bug产生步骤，请尽量提供用例代码。社区已开启国际化推广，请用文心一言、讯飞星火等辅助翻译成英文，减少社区开发者的工作)
The "field" that raises NPE is located in the default method with generics of an interface under annotation. :
@Target({ElementType.TYPE, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@JacksonAnnotationsInside
@JsonSerialize(using = Enums.EnumsJsonSerializer.class)
@JsonDeserialize(using = Enums.EnumsJsonDeserializer.class)
public @interface Enums {
//...
interface Serialize<T extends Enum<T> & Serialize<T>> {
default String getSerializationName() {
return ((Enum<?>) this).name();
}
default Integer getSerializationId() {
return ((Enum<?>) this).ordinal();
}
@SuppressWarnings("unchecked")
default Class<T> getOriginalClass() { // this "field" causes NPE
return (Class<T>) this.getClass();
}
//...
}
//...
}Context(Bug影响描述，社区已开启国际化推广，请用文心一言、讯飞星火等辅助翻译成英文，减少社区开发者的工作)
try it with apideploy？
@muyuanjin Could you provide a more detailed use case to assist the community in more effectively resolving issues? If you could help fix this problem, we would greatly welcome your contribution.
The following is a local test that can reproduce this problem :
/**
* com.ly.doc.helper.JsonBuildHelper#buildJson
* issue:NPE in JsonBuildHelper #789
*/
@Test
void testBuildJsonWithNPE() throws IOException {
ApiConfig apiConfig = new ApiConfig();
JavaProjectBuilder projectBuilder = JavaProjectBuilderHelper.create();
Assertions.assertNotNull(projectBuilder.getClassByName(getClass().getName()));
JavaClass taskType = projectBuilder.getClassByName(Task.class.getName());
Assertions.assertNotNull(taskType);
Assertions.assertFalse(taskType.getMethods().isEmpty());
ProjectDocConfigBuilder builder = new ProjectDocConfigBuilder(apiConfig, projectBuilder);
Assertions.assertNull(builder.getClassByName(getClass().getName()));
Assertions.assertNotNull(builder.getClassByName(Task.class.getName()));
Assertions.assertFalse(builder.getClassByName(Task.class.getName()).getMethods().isEmpty());
JsonBuildHelper.buildJson(Task.class.getName(),
Task.class.getCanonicalName(),
false, 0, new HashMap<>(16), new HashSet<>(), builder
);
}
interface Serialize<T extends Serialize<T>> {
default String getSerializationName() {
return ((Enum<?>) this).name();
}
default Integer getSerializationId() {
return ((Enum<?>) this).ordinal();
}
@SuppressWarnings("unchecked")
default Class<T> getOriginalClass() {
return (Class<T>) this.getClass();
}
}
public static class Task implements Serialize<Task> {
private String taskType;
public String getTaskType() {
return taskType;
}
public void setTaskType(String taskType) {
this.taskType = taskType;
}
}