webview add getCertificate interface docs

Signed-off-by: Nlie <lvjunmao@huawei.com>
Change-Id: I8696f41d3f8d3e4e31867a7ee375272ee01329b5

zh-cn/application-dev/reference/apis/js-apis-webview.md

@@ -3258,6 +3258,320 @@ struct WebComponent {
 }
 ```
 
+### getCertificate<sup>10+</sup>
+
+getCertificate(): Promise<Array<cert.X509Cert>>
+
+获取当前网站的证书信息。使用web组件加载https网站，会进行SSL证书校验，该接口会通过Promise异步返回当前网站的X509格式证书（X509Cert证书类型定义见[X509Cert定义](./js-apis-cert.md)），便于开发者展示网站证书信息。
+
+**系统能力：** SystemCapability.Web.Webview.Core
+
+**返回值：**
+
+| 类型       | 说明                                          |
+| ---------- | --------------------------------------------- |
+| Promise<Array<cert.X509Cert>> | Promise实例，用于获取当前加载的https网站的X509格式证书数组。 |
+
+**错误码：**
+
+以下错误码的详细介绍请参见[webview错误码](../errorcodes/errorcode-webview.md)。
+
+| 错误码ID | 错误信息                                                     |
+| -------- | ------------------------------------------------------------ |
+| 17100001 | Init error. The WebviewController must be associated with a Web component. |
+
+**示例：**
+
+```ts
+// xxx.ets
+import web_webview from '@ohos.web.webview';
+
+function Uint8ArrayToString(dataArray) {
+  var dataString = ''
+  for (var i = 0; i < dataArray.length; i++) {
+    dataString += String.fromCharCode(dataArray[i])
+  }
+  return dataString
+}
+
+function ParseX509CertInfo(x509CertArray) {
+  let res: string = 'getCertificate success: len = ' + x509CertArray.length;
+  for (let i = 0; i < x509CertArray.length; i++) {
+    res += ', index = ' + i + ', issuer name = '
+    + Uint8ArrayToString(x509CertArray[i].getIssuerName().data) + ', subject name = '
+    + Uint8ArrayToString(x509CertArray[i].getSubjectName().data) + ', valid start = '
+    + x509CertArray[i].getNotBeforeTime()
+    + ', valid end = ' + x509CertArray[i].getNotAfterTime()
+  }
+  return res
+}
+
+@Entry
+@Component
+struct Index {
+  // outputStr在UI界面显示调试信息
+  @State outputStr: string = ''
+  webviewCtl: web_webview.WebviewController = new web_webview.WebviewController();
+
+  build() {
+    Row() {
+      Column() {
+        List({space: 20, initialIndex: 0}) {
+          ListItem() {
+            Button() {
+              Text('load bad ssl')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              // 加载一个过期的证书网站，查看获取到的证书信息
+              this.webviewCtl.loadUrl('https://expired.badssl.com')
+            })
+            .height(50)
+          }
+
+          ListItem() {
+            Button() {
+              Text('load example')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              // 加载一个https网站，查看网站的证书信息
+              this.webviewCtl.loadUrl('https://www.example.com')
+            })
+            .height(50)
+          }
+
+          ListItem() {
+            Button() {
+              Text('getCertificate Promise')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              try {
+                this.webviewCtl.getCertificate().then(x509CertArray => {
+                  this.outputStr = ParseX509CertInfo(x509CertArray);
+                })
+              } catch (error) {
+                this.outputStr = 'getCertificate failed: ' + error.code + ", errMsg: " + error.message;
+              }
+            })
+            .height(50)
+          }
+
+          ListItem() {
+            Button() {
+              Text('getCertificate AsyncCallback')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              try {
+                this.webviewCtl.getCertificate((error, x509CertArray) => {
+                  if (error) {
+                    this.outputStr = 'getCertificate failed: ' + error.code + ", errMsg: " + error.message;
+                  } else {
+                    this.outputStr = ParseX509CertInfo(x509CertArray);
+                  }
+                })
+              } catch (error) {
+                this.outputStr = 'getCertificate failed: ' + error.code + ", errMsg: " + error.message;
+              }
+            })
+            .height(50)
+          }
+        }
+        .listDirection(Axis.Horizontal)
+        .height('10%')
+
+        Text(this.outputStr)
+          .width('100%')
+          .fontSize(10)
+
+        Web({ src: 'https://www.example.com', controller: this.webviewCtl })
+          .fileAccess(true)
+          .javaScriptAccess(true)
+          .domStorageAccess(true)
+          .onlineImageAccess(true)
+          .onPageEnd((e) => {
+            this.outputStr = 'onPageEnd : url = ' + e.url
+          })
+          .onSslErrorEventReceive((e) => {
+            // 忽略ssl证书错误，便于测试一些证书过期的网站，如：https://expired.badssl.com
+            e.handler.handleConfirm()
+          })
+          .width('100%')
+          .height('70%')
+      }
+      .height('100%')
+    }
+  }
+}
+```
+
+### getCertificate<sup>10+</sup>
+
+getCertificate(callback: AsyncCallback<Array<cert.X509Cert>>): void
+
+获取当前网站的证书信息。使用web组件加载https网站，会进行SSL证书校验，该接口会通过AsyncCallback异步返回当前网站的X509格式证书（X509Cert证书类型定义见[X509Cert定义](./js-apis-cert.md)），便于开发者展示网站证书信息。
+
+**系统能力：** SystemCapability.Web.Webview.Core
+
+**参数：**
+
+| 参数名   | 类型                         | 必填 | 说明                                     |
+| -------- | ---------------------------- | ---- | ---------------------------------------- |
+| callback | AsyncCallback<Array<cert.X509Cert>> | 是   | 通过AsyncCallback异步返回当前网站的X509格式证书。 |
+
+**错误码：**
+
+以下错误码的详细介绍请参见[webview错误码](../errorcodes/errorcode-webview.md)。
+
+| 错误码ID | 错误信息                                                     |
+| -------- | ------------------------------------------------------------ |
+| 17100001 | Init error. The WebviewController must be associated with a Web compoent. |
+
+**示例：**
+
+```ts
+// xxx.ets
+import web_webview from '@ohos.web.webview';
+
+function Uint8ArrayToString(dataArray) {
+  var dataString = ''
+  for (var i = 0; i < dataArray.length; i++) {
+    dataString += String.fromCharCode(dataArray[i])
+  }
+  return dataString
+}
+
+function ParseX509CertInfo(x509CertArray) {
+  let res: string = 'getCertificate success: len = ' + x509CertArray.length;
+  for (let i = 0; i < x509CertArray.length; i++) {
+    res += ', index = ' + i + ', issuer name = '
+    + Uint8ArrayToString(x509CertArray[i].getIssuerName().data) + ', subject name = '
+    + Uint8ArrayToString(x509CertArray[i].getSubjectName().data) + ', valid start = '
+    + x509CertArray[i].getNotBeforeTime()
+    + ', valid end = ' + x509CertArray[i].getNotAfterTime()
+  }
+  return res
+}
+
+@Entry
+@Component
+struct Index {
+  // outputStr在UI界面显示调试信息
+  @State outputStr: string = ''
+  webviewCtl: web_webview.WebviewController = new web_webview.WebviewController();
+
+  build() {
+    Row() {
+      Column() {
+        List({space: 20, initialIndex: 0}) {
+          ListItem() {
+            Button() {
+              Text('load bad ssl')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              // 加载一个过期的证书网站，查看获取到的证书信息
+              this.webviewCtl.loadUrl('https://expired.badssl.com')
+            })
+            .height(50)
+          }
+
+          ListItem() {
+            Button() {
+              Text('load example')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              // 加载一个https网站，查看网站的证书信息
+              this.webviewCtl.loadUrl('https://www.example.com')
+            })
+            .height(50)
+          }
+
+          ListItem() {
+            Button() {
+              Text('getCertificate Promise')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              try {
+                this.webviewCtl.getCertificate().then(x509CertArray => {
+                  this.outputStr = ParseX509CertInfo(x509CertArray);
+                })
+              } catch (error) {
+                this.outputStr = 'getCertificate failed: ' + error.code + ", errMsg: " + error.message;
+              }
+            })
+            .height(50)
+          }
+
+          ListItem() {
+            Button() {
+              Text('getCertificate AsyncCallback')
+                .fontSize(10)
+                .fontWeight(FontWeight.Bold)
+            }
+            .type(ButtonType.Capsule)
+            .onClick(() => {
+              try {
+                this.webviewCtl.getCertificate((error, x509CertArray) => {
+                  if (error) {
+                    this.outputStr = 'getCertificate failed: ' + error.code + ", errMsg: " + error.message;
+                  } else {
+                    this.outputStr = ParseX509CertInfo(x509CertArray);
+                  }
+                })
+              } catch (error) {
+                this.outputStr = 'getCertificate failed: ' + error.code + ", errMsg: " + error.message;
+              }
+            })
+            .height(50)
+          }
+        }
+        .listDirection(Axis.Horizontal)
+        .height('10%')
+
+        Text(this.outputStr)
+          .width('100%')
+          .fontSize(10)
+
+        Web({ src: 'https://www.example.com', controller: this.webviewCtl })
+          .fileAccess(true)
+          .javaScriptAccess(true)
+          .domStorageAccess(true)
+          .onlineImageAccess(true)
+          .onPageEnd((e) => {
+            this.outputStr = 'onPageEnd : url = ' + e.url
+          })
+          .onSslErrorEventReceive((e) => {
+            // 忽略ssl证书错误，便于测试一些证书过期的网站，如：https://expired.badssl.com
+            e.handler.handleConfirm()
+          })
+          .width('100%')
+          .height('70%')
+      }
+      .height('100%')
+    }
+  }
+}
+```
+
 ## WebCookieManager
 
 通过WebCookie可以控制Web组件中的cookie的各种行为，其中每个应用中的所有web组件共享一个WebCookieManager实例。