app Component里注入current Product service：
实现代码
：
在Component html里，用async和json pipe将myproduct$的数据以json格式显示：
随便打开一个产品的明细页面，就可以看到json数据了：
{ "code": "300938", "name": "Photosmart E317 Digital Camera", "summary": "Point and shoot simplicity in a 5 MP camera.", "price": { "formattedValue": "$114.12", "currencyIso": "USD", "priceType": "BUY", "value": 114.12 }, "images": { "PRIMARY": { "zoom": { "altText": "Photosmart E317 Digital Camera", "format": "zoom", "imageType": "PRIMARY", "url": "https://spartacus-dev0.eastus.cloudapp.azure.com:9002/medias/?context=bWFzdGVyfGltYWdlc3wxMzkzNnxpbWFnZS9qcGVnfGltYWdlcy9oMjYvaDdhLzg3OTcyNTE0NjkzNDIuanBnfGU3N2FlYWQ1YmQ1ODhjZjZiNTFjNDg3NDdjNGRkNjM5NGQzMjZmZWVmNjc3ZWQwMjgzY2MyNDJlNzYyNTczM2Q" }, "product": { "altText": "Photosmart E317 Digital Camera", "format": "product", "imageType": "PRIMARY", "url": "https://spartacus-dev0.eastus.cloudapp.azure.com:9002/medias/?context=bWFzdGVyfGltYWdlc3w3MDg1fGltYWdlL2pwZWd8aW1hZ2VzL2g2Ni9oOWQvODc5NzI3Nzc0OTI3OC5qcGd8NzdjOTNiMThkODQ4NTM4NmQ2NjMxMGMwYmMyOTIwODIwMzI4NTgyMGUxNDc4Y2I0OTRkOGViODNlNDZiYTJhNw" }, "thumbnail": { "altText": "Photosmart E317 Digital Camera", "format": "thumbnail", "imageType": "PRIMARY", "url": "https://spartacus-dev0.eastus.cloudapp.azure.com:9002/medias/?context=bWFzdGVyfGltYWdlc3wyMDYxfGltYWdlL2pwZWd8aW1hZ2VzL2g3ZS9oZmEvODc5NzMwNDA5NDc1MC5qcGd8OGZjMTNjM2JmMGY0MmYyMWY3OGM5YjQ4YjAyNzM4NjkxYjUyMmQzMDBhMmMzMjMwZThmMjI4OWMwZjg1NmYzMw" }, "cartIcon": { "altText": "Photosmart E317 Digital Camera", "format": "cartIcon", "imageType": "PRIMARY", "url": "https://spartacus-dev0.eastus.cloudapp.azure.com:9002/medias/?context=bWFzdGVyfGltYWdlc3wxNDQwfGltYWdlL2pwZWd8aW1hZ2VzL2gxNS9oZmYvODc5NzMzMDQ0MDIyMi5qcGd8ODU0ZWQwMjY5OWE5OTBlZjc0ZGFhZTU4ZWYwNDk4ODFmZmM1ZTg2ZjIxOWFiZTBkZmU0NDBmMDBiNTYyMzdlYg" } }, "GALLERY": [ { "zoom": { "altText": "Photosmart E317 Digital Camera", "format": "zoom", "galleryIndex": 0, "imageType": "GALLERY", "url": "https://spartacus-dev0.eastus.cloudapp.azure.com:9002/medias/?context=bWFzdGVyfGltYWdlc3wxMzkzNnxpbWFnZS9qcGVnfGltYWdlcy9oMjYvaDdhLzg3OTcyNTE0NjkzNDIuanBnfGU3N2FlYWQ1YmQ1ODhjZjZiNTFjNDg3NDdjNGRkNjM5NGQzMjZmZWVmNjc3ZWQwMjgzY2MyNDJlNzYyNTczM2Q" }, "product": { "altText": "Photosmart E317 Digital Camera", "format": "product", "galleryIndex": 0, "imageType": "GALLERY", "url": "https://spartacus-dev0.eastus.cloudapp.azure.com:9002/medias/?context=bWFzdGVyfGltYWdlc3w3MDg1fGltYWdlL2pwZWd8aW1hZ2VzL2g2Ni9oOWQvODc5NzI3Nzc0OTI3OC5qcGd8NzdjOTNiMThkODQ4NTM4NmQ2NjMxMGMwYmMyOTIwODIwMzI4NTgyMGUxNDc4Y2I0OTRkOGViODNlNDZiYTJhNw" }, "thumbnail": { "altText": "Photosmart E317 Digital Camera", "format": "thumbnail", "galleryIndex": 0, "imageType": "GALLERY", "url": "https://spartacus-dev0.eastus.cloudapp.azure.com:9002/medias/?context=bWFzdGVyfGltYWdlc3wyMDYxfGltYWdlL2pwZWd8aW1hZ2VzL2g3ZS9oZmEvODc5NzMwNDA5NDc1MC5qcGd8OGZjMTNjM2JmMGY0MmYyMWY3OGM5YjQ4YjAyNzM4NjkxYjUyMmQzMDBhMmMzMjMwZThmMjI4OWMwZjg1NmYzMw" } } ] }, "nameHtml": "Photosmart E317 Digital Camera", "nameForUrl": "photosmart-e317-digital-camera", "baseOptions": [], "purchasable": true, "averageRating": 4.5, "stock": { "isValueRounded": false, "stockLevel": 314, "stockLevelStatus": "inStock" }, "description": "Get point and shoot simplicity plus crisp, true-to-life photos with this stylish and easy-to-use camera.<br/><br/>Get close in with 4x digital zoom, review via the clear 3.8 cm LCD then print great 10 × 15 cm photos and enlargements up to poster size.", "availableForPickup": true, "url": "/electronics-spa/products/300938", "numberOfReviews": 22, "manufacturer": "HP", "categories": [ { "code": "576", "name": "Digital Compacts", "url": "/Open-Catalogue/Cameras/Digital-Cameras/Digital-Compacts/c/576" }, { "code": "brand_1", "name": "HP", "url": "/Brands/HP/c/brand_1" } ], "priceRange": {}, "configurable": false }