Angular2+ 集成ng2-ckeidtor并实现图片上传

注:

    ng2-ckeditor的github地址:https://github.com/chymz/ng2-ckeditor#readme

    CKEditor的配置均参考官方API:https://ckeditor.com/docs/

​    文章中使用的ckeditor版本:4.5.11

1.在项目引入ng2-ckeditor依赖

  • 在index.html引入ckeditor.js链接
1.png

注:引用外部的链接的好处是可以利用CDN加速并且可以减轻服务器的压力等等,但是项目有可能会在局域网中访问,因此这里我采用的方式把当前的ckeditor.js资源下载到了本地。

  • 在index.html引入本地目录assets/core/base/ckeditor/下的ckeditor.js资源

    
    
  • 在项目跟目录下执行以下命令,进行安装ng2-ckeditor

    npm install ng2-ckeditor
    
  • 在SystemJS config配置中加入以下配置

    System.config({
      map: {
        'ng2-ckeditor': 'npm:ng2-ckeditor',
      },
      packages: {
        'ng2-ckeditor': {
          main: 'lib/index.js',
          defaultExtension: 'js',
        },
      },
    });
    

注:以上配置都是根据官方github上的说明而来,更多配置信息请参考ng2-ckeditor(github)

2.在angular2的组件中使用ng2-ckeditor

  • 在本地目录assets/core/base/ckeditor/下配置config.js
2.png

config.js

CKEDITOR.editorConfig = function (config) {
    // 富文本的背景色
    config.uiColor = '#F8F8F8';
    config.language = 'zh-cn';
    // 选择自定义工具集
    config.toolbar = 'Basic';
    // 去掉图片预览的中文字
    config.image_previewText = ' ';
    config.removeDialogTabs = 'image:advanced;image:Link';
    // 自己的定义的工具集
    config.toolbar_Basic = [
        ['Maximize', 'Source'],
        ['Undo', 'Redo', 'Cut', ' Copy', 'Paste', 'PasteText', 'PasteFromWord',],
        ['Link', 'Unlink', 'Anchor', 'Image', 'Table'],
        ['JustifyLeft', 'JustifyCenter', 'JustifyRight', 'JustifyBlock'],
        ['Bold', 'Italic', 'Underline', 'Strike', 'Subscript', 'Superscript'],
        ['NumberedList', 'BulletedList', 'Outdent', 'Indent', 'Blockquote'],
        ['Styles', 'Format', 'Font', 'FontSize', 'TextColor', 'BGColor'],
        ['HorizontalRule', 'Smiley', 'SpecialChar', 'Checkbox']
    ];
    // 全部的工具集
    config.toolbar_Full = [
        {
            name: 'document',
            items: ['Source', '-', 'Save', 'NewPage', 'DocProps', 'Preview', 'Print', '-', 'Templates']
        },
        {name: 'clipboard', items: ['Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', '-', 'Undo', 'Redo']},
        {name: 'editing', items: ['Find', 'Replace', '-', 'SelectAll', '-', 'SpellChecker', 'Scayt']},
        {
            name: 'forms',
            items: ['Form', 'Checkbox', 'Radio', 'TextField', 'Textarea', 'Select', 'Button', 'ImageButton', 'HiddenField']
        },
        '/',
        {
            name: 'basicstyles',
            items: ['Bold', 'Italic', 'Underline', 'Strike', 'Subscript', 'Superscript', '-', 'RemoveFormat']
        },
        {
            name: 'paragraph',
            items: ['NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'Blockquote', 'CreateDiv', '-', 'JustifyLeft', 'JustifyCenter', 'JustifyRight', 'JustifyBlock', '-', 'BidiLtr', 'BidiRtl']
        },
        {name: 'links', items: ['Link', 'Unlink', 'Anchor']},
        {
            name: 'insert',
            items: ['Image', 'Flash', 'Table', 'HorizontalRule', 'Smiley', 'SpecialChar', 'PageBreak', 'Iframe']
        },
        '/',
        {name: 'styles', items: ['Styles', 'Format', 'Font', 'FontSize']},
        {name: 'colors', items: ['TextColor', 'BGColor']},
        {name: 'tools', items: ['Maximize', 'ShowBlocks', '-', 'About']}
    ];
};
  • app.module.ts
import { CKEditorModule } from 'ng2-ckeditor';

@NgModule({
  // ...
  imports: [CKEditorModule],
  // ...
})
export class AppModule {}
  • app.component.html

{{mVZZArticle.content}}
  • app.component.ts
export class AppComponent extends AppBaseComponent implements OnInit {

    public mVZZArticle;
    public mVZZConfig;

    constructor() {
        super();
    }

    ngOnInit() {
        this.mVZZArticle = {content: null};
        this.mVZZConfig = {filebrowserImageUploadUrl: '/xxx/uploadImageAddress'};
    }
}

注:在这里配置了filebrowserImageUploadUrl参数主要是显示上传到服务器按钮,如下图:

3.png

3.编写JAVA后端接受ckeditor图片接口

  • FileUploadController.java
@RequestMapping(value = "/uploadfileByCK", method = RequestMethod.POST)
    @ApiOperation(value = "Ckeditor表单上传文件", notes = "")
    public void handleFormUploadByCkEditor(StandardMultipartHttpServletRequest request, HttpServletResponse response) {
        try {
            String rp = "";
            Map files = request.getFileMap();
            String relWebPathPrefix = appConfig.getResource().getUploadPrefix();
            relWebPathPrefix = relWebPathPrefix.replace("/**", "");
            String relativPathPrefix = appConfig.getResource().getPath();
            Iterator iterator = request.getFileNames();
            if (iterator.hasNext()) {
                String name = iterator.next();
                MultipartFile file = files.get(name);
                String fn = file.getOriginalFilename();
                rp = this.handleFile(file.getInputStream(), relativPathPrefix, fn);
            }
            // 返回绝对路径
            String fullPath = appConfig.getResource().getHost() + relativPathPrefix + rp;
            // 使用response直接返回结果
            PrintWriter out = response.getWriter();
            String fullContentType = "text/html;charset=UTF-8";
            response.setContentType(fullContentType);
            String callback = request.getParameter("CKEditorFuncNum");
            out = response.getWriter();
            out.println("");
            // 使用json返回格式,未测试该代码是否正确执行
            // 成功:{"uploaded":1,"fileName":"文件名.文件格式","url":"上传成功后得资源路径url"}
            // 失败: {"uploaded":0,"error":{"message":"资源上传错误得原因..."}}
        } catch (Exception e) {
            throw new BusinessException("文件上传异常:" + e.getCause().getMessage());
        }
    }
    
/**
     * 
     * @param file
     * @param relativPathPrefix 相对路径前缀
     * @param fileName
     * @return
     * @throws IOException
     */
    private String handleFile(InputStream input, String relativPathPrefix, String fileName) throws IOException {
        String sp = File.separator;

        String date = DateUtils.parseToString(new Date(), "yyyyMMdd");
        String newFilePath = appConfig.getResource().getDir() + relativPathPrefix + sp + date + sp;

        File uploadpath = new File(newFilePath);

        if (!uploadpath.exists()) {
            uploadpath.mkdirs();
        }

        // 重命名文件
        int start = fileName.lastIndexOf(".");
        String fileSuffix = fileName.substring(start);
        fileName = UUID.randomUUID().toString() + fileSuffix;

        String newFile = newFilePath + fileName;
        String relatePath = sp + date + sp + fileName;

        BufferedInputStream inBuff = new BufferedInputStream(input);

        // 新建文件输出流并对它进行缓冲
        FileOutputStream output = new FileOutputStream(newFile);
        BufferedOutputStream outBuff = new BufferedOutputStream(output);

        // 缓冲数组
        byte[] b = new byte[1024 * 5];
        int len;
        while ((len = inBuff.read(b)) != -1) {
            outBuff.write(b, 0, len);
        }
        // 刷新此缓冲的输出流
        outBuff.flush();
        // 关闭流
        inBuff.close();
        outBuff.close();
        output.close();
        input.close();
        relatePath = relatePath.replaceAll("\\\\", "/");
        return relatePath;
    }

注:对于CKEditor的方式一定要按照下图代码中的那样,对于这种返回方法个人感觉不是很好,但是找了很多文档也未找对应的修改方式。

4.png

最终效果图

5.png

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