安装我的jira插件时，开发一个自定义事件以创建一个自定义字段

Question

我是在jira中开发插件的新手，所以我的要求是在安装插件时添加一个新的自定义字段。我已经添加了必需的依赖项，并且此代码未产生任何错误，但是在安装插件时，找不到自定义字段吗？

我做错了什么？

package com.jtricks;

import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;
import javax.inject.Named;

import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;

import com.atlassian.jira.issue.CustomFieldManager;
import com.atlassian.jira.issue.context.GlobalIssueContext;
import com.atlassian.jira.issue.context.JiraContextNode;
import com.atlassian.jira.issue.fields.CustomField;
import com.atlassian.jira.issue.fields.screen.FieldScreen;
import com.atlassian.jira.issue.fields.screen.FieldScreenManager;
import com.atlassian.jira.issue.fields.screen.FieldScreenTab;
import com.atlassian.jira.issue.issuetype.IssueType;
import  com.atlassian.plugin.spring.scanner.annotation.export.ExportAsService;
import com.atlassian.plugin.spring.scanner.annotation.imports.ComponentImport;

@ExportAsService ({PluginListener.class})
@Named ("pluginListener")
public class PluginListener implements InitializingBean, DisposableBean {
@ComponentImport
private final CustomFieldManager customFieldManager;
@ComponentImport
private final FieldScreenManager fieldScreenManager;
@Inject
public PluginListener(CustomFieldManager customFieldManager,
FieldScreenManager fieldScreenManager) {
this.customFieldManager = customFieldManager;
this.fieldScreenManager = fieldScreenManager;
}
@Override
public void destroy() throws Exception {
//Handle plugin disabling or un-installation here


    //Get the already installed custom field by name
    CustomField cField =
    this.customFieldManager.getCustomFieldObjectByName("TEST_TEXT_CF");
    //Remove if not null
    if (cField != null) {
    this.customFieldManager.removeCustomField(cField);

    }   

}
@Override
public void afterPropertiesSet() throws Exception {
//Handle plugin enabling or installation here

System.out.println("gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg");
    //Create a list of issue types for which the custom field needs to be available
    List<IssueType> issueTypes = new ArrayList<IssueType>();
    issueTypes.add(null);
    //Create a list of project contexts for which the custom field needs to be available
    List<JiraContextNode> contexts =
    new ArrayList<JiraContextNode>();
    contexts.add(GlobalIssueContext.getInstance());

    //Add custom field
    CustomField cField =
    this.customFieldManager.createCustomField("TEST_TEXT_CF", "A Sample Text Field",
    this.customFieldManager.getCustomFieldType("com.atlassian.jira.plugin.system.customfieldtypes:textfield"),
    this.customFieldManager.getCustomFieldSearcher("com.atlassian.jira.plugin.system.customfieldtypes:textsearcher"),
    contexts, issueTypes);
    // Add field to default Screen
    FieldScreen defaultScreen = fieldScreenManager.getFieldScreen
    (FieldScreen.DEFAULT_SCREEN_ID);
    if (!defaultScreen.containsField(cField.getId())) {
    FieldScreenTab firstTab = defaultScreen.getTab(0);
    firstTab.addFieldScreenLayoutItem(cField.getId());

   }
 }
}