add:根据name（传入String）获取Identity；设置默认Identity（不带密码的）

src/main/java/security/IdentityManager.java

@@ -88,7 +88,6 @@ public class IdentityManager {
 
     /**
      * 从sqlite中加载全部网络身份信息并封装成identifies与versionMap
-     * @return {ConcurrentMap}
      * @throws Exception
      */
     private void loadAllIdentifies() throws Exception{
@@ -260,6 +259,7 @@ public class IdentityManager {
         Persist.setDefaultIdentityByNameInStorage(identity.getName());
         // 数据库设置成功后再设置内存中数据
         this.defaultIdentity = identity;
+        this.version += 1;
         return true;
     }
 

src/main/java/security/KeyChain.java

@@ -98,6 +98,49 @@ public class KeyChain {
         }
     }
 
+    /**
+     * 设置默认的的网络身份，不带密码
+     * @param identity 身份对象
+     * @return boolean
+     * @author zhengqi wu
+     * @date 2021/6/12
+     **/
+    public void setDefaultIdentity(Identity identity) throws KeyChainException {
+        boolean res = false;
+        try {
+            res = this.identityManager.setDefaultIdentity(identity, true); // 操作修改到数据库中
+        }
+        catch (Exception e)
+        {
+            throw new KeyChainException("Set Default Identity Failed! " + e.getMessage());
+        }
+
+        if (!res)
+        {
+            throw new KeyChainException("Maybe the identity is null.");
+        }
+        this.currentIdentity = identity;
+    }
+
+    /**
+     * 以身份名称字符串名称获取身份对象，查询不到返回为空
+     * @param identityName 身份名称字符串
+     * @return Identity 身份对象
+     * @author zhengqi wu
+     * @date 2021/6/12
+     **/
+    public Identity getIdentityByName(String identityName) throws KeyChainException {
+        Identity res = null;
+        try {
+            res = this.identityManager.getIdentityByName(identityName);
+        }
+        catch (Exception e)
+        {
+            throw new KeyChainException("Get" + identityName + " failed! " + e.getMessage());
+        }
+        return res;
+    }
+
     /**
      * 为一个网络身份申请证书
      * @param identity

src/test/java/security/KeyChainTest.java

@@ -92,6 +92,9 @@ public class KeyChainTest {
         try {
             // 测试设置新身份为当前身份
             KeyChain keyChain = new KeyChain();
+            IdentityManager idm = keyChain.getIdentifyManager();
+            Identity testId = idm.getIdentityByName("aaa");
+            
             Identity id = createRandomIdentity();
 //            keyChain.getIdentifyManager().setDefaultIdentity(id, true);
 //            // 输入密码用于解锁身份
@@ -101,6 +104,36 @@ public class KeyChainTest {
         }
     }
 
+    @Test
+    public void testGetIdentity()
+    {
+        try {
+            // 测试设置新身份为当前身份
+            KeyChain keyChain = new KeyChain();
+            Identity res = keyChain.getIdentityByName("/wzq1");
+            LoggerHelper.info(res.toString());
+        }catch (Exception ex){
+            LoggerHelper.info(ex.getMessage());
+        }
+    }
+
+    @Test
+    public void testSetDefaultIdentity()
+    {
+        try {
+            // 测试设置新身份为当前身份
+            KeyChain keyChain = new KeyChain();
+            Identity res = keyChain.getCurrentIdentity();
+            LoggerHelper.info("当前默认身份信息：" + res.toString());
+            // keyChain.setDefaultIdentity(keyChain.getIdentityByName("/wzq1"));
+            keyChain.setDefaultIdentity(keyChain.getIdentityByName("/wzq0.18345388121889994"));
+            res = keyChain.getCurrentIdentity();
+            LoggerHelper.info("当前默认身份信息：" + res.toString());
+        }catch (Exception ex){
+            LoggerHelper.info(ex.getMessage());
+        }
+    }
+
     @Test
     public void testSignAndVerifyInterest(){
         try {