Netbeans Java Web应用程序在将类移动到包后不会部署

我只是将所有java类移动到一个包（SSP）中，因为我将它们放在默认包中，现在我的应用程序将不再部署到tomcat

我使用：

• Netbeans 8.0.2
• Tomcat 8.0.28
• PostgreSQL 9.4

我尝试了以下方法，没有任何改变：

• 已删除位于C:\Users\MyUser\AppData\Local\Netbeans\Cache的Netbeans缓存
• 清洁和建设项目
• 关闭tomcat并重新启动它

错误（Tomcat日志）：

Netbeans调试错误：

FAIL - Deployed application at context path /Self-Service-Portal but context failed to start
D:\Dropbox\Bachelor\Java Projects\Self-Service-Portal\nbproject\build-impl.xml:1157: The module has not been deployed.

以下代码段是tomcat日志中命名的类：

SSP.Load\u config.getPropValues\u db\u user\u pw（Load\u config.java:89）

SSP.Roles\u rights.get\u Roles\u rights（Roles\u rights.java:52）

SSP.Roles\u rights.getInstance（Roles\u rights.java:35）

以防我提供更多信息：

web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="Self-Service-Portal" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee">
<servlet>
    <servlet-name>Login</servlet-name>
    <servlet-class>SSP.Login</servlet-class>
</servlet>
<servlet>
    <servlet-name>Usermode</servlet-name>
    <servlet-class>SSP.Usermode</servlet-class>
</servlet>
<servlet>
    <servlet-name>Echo_usermode</servlet-name>
    <servlet-class>SSP.Echo_usermode</servlet-class>
</servlet>
<servlet>
    <servlet-name>User_management</servlet-name>
    <servlet-class>SSP.User_management</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>Login</servlet-name>
    <url-pattern>/portal.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Usermode</servlet-name>
    <url-pattern>/usermode/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Echo_usermode</servlet-name>
    <url-pattern>/echo_usermode</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>User_management</servlet-name>
    <url-pattern>/user_management/*</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>

<listener>
    <listener-class>SSP.Startup</listener-class>
</listener>

正如这之前所显示的，从来没有引起过问题，我不知道这是否是原因

有没有人知道为什么我的应用程序不会部署，仅仅因为我的类现在在包SSP中，而不再在默认包中，因为我在web.xml中调整了包更改

问候

---

Alkahna

您尝试关闭inputstream，即使它为空。考虑移动来代替资源尝试。或者至少检查inputStream是否为

！=在关闭它之前为空

73:    try {
76:        inputStream = getClass().getResourceAsStream(propFileName);
77
78:        if (inputStream != null) {
80:        } else {
82:        }
83:        
88:    } finally {
89:            inputStream.close(); //Might be null -> cause of your error
90:    }

至于为什么为空：检查属性文件是否部署到了您认为应该部署的位置。尝试使用
getClass（）.getResourceAsStream（）
而不是使用classloader方法。尝试使用绝对路径
/SSP/db_settings.properties
我添加了空检查&从
getClass（）.getClassLoader（）.getresourceastream（）
更改为
getClass（）getresourceastream（propFileName）
，现在工作正常，非常感谢：）事实证明空检查不是必需的，而是从
getClass（）.getClassLoader（）.getResourceAsStream（）
到
getClass（）getResourceAsStream（propFileName）
的更改解决了这个错误空检查是导致可见错误的原因。这是一件好事，因为否则您的问题可能是“我的数据库连接不工作”：-）我不明白为什么当所有类都在默认包中时它会工作，而错误只在类不在默认包中时发生
40: public void get_roles_rights(){
41:
42:    // Get roles & rigths from db
43:    // variables
44:    JDBCConnection database_connection = null;
45:    ResultSet m_ResultSet = null;
46:
47:    // load standard db-user from config file
48:    Load_config properties = new Load_config();
49:
50:    // connect to postgreSQL Database
51:    try {
52:        database_connection = new JDBCConnection("Self-Service-Portal", properties.getPropValues_db_user(), properties.getPropValues_db_user_pw());
53:    } catch (IOException ex) {
54:        Logger.getLogger(User_management.class.getName()).log(Level.SEVERE, null, ex);
55:    }
       .......
114: } 

24:  public class Roles_rights {
25:     
26:     public List<List<Integer>> oe_fac_roles_rights = new ArrayList<List<Integer>>(4);
27: 
28:     private static Roles_rights instance = null;
29:     private Roles_rights() {
30:       // Exists only to defeat instantiation.
31:     }
32:     public static Roles_rights getInstance() {
33:         if(instance == null) {
34:             instance = new Roles_rights();
35:             instance.get_roles_rights();
36:         }
37:         return instance;
38:     }
39:    
40:     public void get_roles_rights(){ 
        ......
114:    }
115: }

16: public class Startup implements javax.servlet.ServletContextListener {
17:    
18:    @Override
19:    public void contextInitialized(ServletContextEvent sce) {
20:        // create singleton object to get all roles/rights from db
21:        Roles_rights tmp = Roles_rights.getInstance();
22:    }
23:
24:    @Override
25:    public void contextDestroyed(ServletContextEvent sce) {
26:        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
27:    }
28: }

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="Self-Service-Portal" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee">
<servlet>
    <servlet-name>Login</servlet-name>
    <servlet-class>SSP.Login</servlet-class>
</servlet>
<servlet>
    <servlet-name>Usermode</servlet-name>
    <servlet-class>SSP.Usermode</servlet-class>
</servlet>
<servlet>
    <servlet-name>Echo_usermode</servlet-name>
    <servlet-class>SSP.Echo_usermode</servlet-class>
</servlet>
<servlet>
    <servlet-name>User_management</servlet-name>
    <servlet-class>SSP.User_management</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>Login</servlet-name>
    <url-pattern>/portal.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Usermode</servlet-name>
    <url-pattern>/usermode/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Echo_usermode</servlet-name>
    <url-pattern>/echo_usermode</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>User_management</servlet-name>
    <url-pattern>/user_management/*</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>

<listener>
    <listener-class>SSP.Startup</listener-class>
</listener>

cvc-elt.1: Cannot find the declaration of element 'web-app'

73:    try {
76:        inputStream = getClass().getResourceAsStream(propFileName);
77
78:        if (inputStream != null) {
80:        } else {
82:        }
83:        
88:    } finally {
89:            inputStream.close(); //Might be null -> cause of your error
90:    }